Uncaught exception thrown in session handler.

Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT 1 AS expression FROM {sessions} sessions WHERE sid = :db_condition_placeholder_0; Array ( [:db_condition_placeholder_0] => eBQZozcdAriYOKhhos9HRatxUkeCXw_wTrngIH53Nq4 ) in Drupal\Core\Session\SessionHandler->write() (line 84 of /var/www/html/new_trainee/core/lib/Drupal/Core/Session/SessionHandler.php).

Drupal\Core\Session\SessionHandler->write('B3VlN4LrWjZk9ne0JqN_9AI6CV395p-4aMaHdmgt7Hk', '_symfony_flashes|a:1:{s:5:"error";a:2:{i:0;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:3238:"<em class="placeholder">Warning</em>: PDOStatement::execute(): MySQL server has gone away in <em class="placeholder">Drupal\Core\Database\Statement-&gt;execute()</em> (line <em class="placeholder">59</em> of <em class="placeholder">core/lib/Drupal/Core/Database/Statement.php</em>). Drupal\Core\Database\Statement-&gt;execute(Array, Array) (Line: 631)
Drupal\Core\Database\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 358)
Drupal\Core\Database\Driver\mysql\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 106)
Drupal\Core\Database\Query\Upsert-&gt;execute() (Line: 263)
Drupal\Core\Cache\DatabaseBackend-&gt;doSetMultiple(Array) (Line: 193)
Drupal\Core\Cache\DatabaseBackend-&gt;setMultiple(Array) (Line: 181)
Drupal\Core\Cache\DatabaseBackend-&gt;set(&#039;route:en:/traineeprograms/company/416/company_mobile/527/education_mobile/586:&#039;, Array, -1, Array) (Line: 181)
Drupal\Core\Routing\RouteProvider-&gt;getRouteCollectionForRequest(Object) (Line: 239)
Drupal\Core\Routing\Router-&gt;getInitialRouteCollection(Object) (Line: 123)
Drupal\Core\Routing\Router-&gt;matchRequest(Object) (Line: 92)
Drupal\Core\Routing\AccessAwareRouter-&gt;matchRequest(Object) (Line: 115)
Symfony\Component\HttpKernel\EventListener\RouterListener-&gt;onKernelRequest(Object, &#039;kernel.request&#039;, Object)
call_user_func(Array, Object, &#039;kernel.request&#039;, Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher-&gt;dispatch(&#039;kernel.request&#039;, Object) (Line: 127)
Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19)
";}i:1;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:3245:"<em class="placeholder">Warning</em>: PDOStatement::execute(): Error reading result set's header in <em class="placeholder">Drupal\Core\Database\Statement-&gt;execute()</em> (line <em class="placeholder">59</em> of <em class="placeholder">core/lib/Drupal/Core/Database/Statement.php</em>). Drupal\Core\Database\Statement-&gt;execute(Array, Array) (Line: 631)
Drupal\Core\Database\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 358)
Drupal\Core\Database\Driver\mysql\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 106)
Drupal\Core\Database\Query\Upsert-&gt;execute() (Line: 263)
Drupal\Core\Cache\DatabaseBackend-&gt;doSetMultiple(Array) (Line: 193)
Drupal\Core\Cache\DatabaseBackend-&gt;setMultiple(Array) (Line: 181)
Drupal\Core\Cache\DatabaseBackend-&gt;set(&#039;route:en:/traineeprograms/company/416/company_mobile/527/education_mobile/586:&#039;, Array, -1, Array) (Line: 181)
Drupal\Core\Routing\RouteProvider-&gt;getRouteCollectionForRequest(Object) (Line: 239)
Drupal\Core\Routing\Router-&gt;getInitialRouteCollection(Object) (Line: 123)
Drupal\Core\Routing\Router-&gt;matchRequest(Object) (Line: 92)
Drupal\Core\Routing\AccessAwareRouter-&gt;matchRequest(Object) (Line: 115)
Symfony\Component\HttpKernel\EventListener\RouterListener-&gt;onKernelRequest(Object, &#039;kernel.request&#039;, Object)
call_user_func(Array, Object, &#039;kernel.request&#039;, Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher-&gt;dispatch(&#039;kernel.request&#039;, Object) (Line: 127)
Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19)
";}}}_sf2_meta|a:3:{s:1:"u";i:1732483767;s:1:"c";i:1732483767;s:1:"l";s:7:"2000000";}') (Line: 89)
Drupal\Core\Session\WriteSafeSessionHandler->write('B3VlN4LrWjZk9ne0JqN_9AI6CV395p-4aMaHdmgt7Hk', '_symfony_flashes|a:1:{s:5:"error";a:2:{i:0;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:3238:"<em class="placeholder">Warning</em>: PDOStatement::execute(): MySQL server has gone away in <em class="placeholder">Drupal\Core\Database\Statement-&gt;execute()</em> (line <em class="placeholder">59</em> of <em class="placeholder">core/lib/Drupal/Core/Database/Statement.php</em>). Drupal\Core\Database\Statement-&gt;execute(Array, Array) (Line: 631)
Drupal\Core\Database\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 358)
Drupal\Core\Database\Driver\mysql\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 106)
Drupal\Core\Database\Query\Upsert-&gt;execute() (Line: 263)
Drupal\Core\Cache\DatabaseBackend-&gt;doSetMultiple(Array) (Line: 193)
Drupal\Core\Cache\DatabaseBackend-&gt;setMultiple(Array) (Line: 181)
Drupal\Core\Cache\DatabaseBackend-&gt;set(&#039;route:en:/traineeprograms/company/416/company_mobile/527/education_mobile/586:&#039;, Array, -1, Array) (Line: 181)
Drupal\Core\Routing\RouteProvider-&gt;getRouteCollectionForRequest(Object) (Line: 239)
Drupal\Core\Routing\Router-&gt;getInitialRouteCollection(Object) (Line: 123)
Drupal\Core\Routing\Router-&gt;matchRequest(Object) (Line: 92)
Drupal\Core\Routing\AccessAwareRouter-&gt;matchRequest(Object) (Line: 115)
Symfony\Component\HttpKernel\EventListener\RouterListener-&gt;onKernelRequest(Object, &#039;kernel.request&#039;, Object)
call_user_func(Array, Object, &#039;kernel.request&#039;, Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher-&gt;dispatch(&#039;kernel.request&#039;, Object) (Line: 127)
Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19)
";}i:1;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:3245:"<em class="placeholder">Warning</em>: PDOStatement::execute(): Error reading result set's header in <em class="placeholder">Drupal\Core\Database\Statement-&gt;execute()</em> (line <em class="placeholder">59</em> of <em class="placeholder">core/lib/Drupal/Core/Database/Statement.php</em>). Drupal\Core\Database\Statement-&gt;execute(Array, Array) (Line: 631)
Drupal\Core\Database\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 358)
Drupal\Core\Database\Driver\mysql\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 106)
Drupal\Core\Database\Query\Upsert-&gt;execute() (Line: 263)
Drupal\Core\Cache\DatabaseBackend-&gt;doSetMultiple(Array) (Line: 193)
Drupal\Core\Cache\DatabaseBackend-&gt;setMultiple(Array) (Line: 181)
Drupal\Core\Cache\DatabaseBackend-&gt;set(&#039;route:en:/traineeprograms/company/416/company_mobile/527/education_mobile/586:&#039;, Array, -1, Array) (Line: 181)
Drupal\Core\Routing\RouteProvider-&gt;getRouteCollectionForRequest(Object) (Line: 239)
Drupal\Core\Routing\Router-&gt;getInitialRouteCollection(Object) (Line: 123)
Drupal\Core\Routing\Router-&gt;matchRequest(Object) (Line: 92)
Drupal\Core\Routing\AccessAwareRouter-&gt;matchRequest(Object) (Line: 115)
Symfony\Component\HttpKernel\EventListener\RouterListener-&gt;onKernelRequest(Object, &#039;kernel.request&#039;, Object)
call_user_func(Array, Object, &#039;kernel.request&#039;, Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher-&gt;dispatch(&#039;kernel.request&#039;, Object) (Line: 127)
Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19)
";}}}_sf2_meta|a:3:{s:1:"u";i:1732483767;s:1:"c";i:1732483767;s:1:"l";s:7:"2000000";}') (Line: 67)
Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy->write('B3VlN4LrWjZk9ne0JqN_9AI6CV395p-4aMaHdmgt7Hk', '_symfony_flashes|a:1:{s:5:"error";a:2:{i:0;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:3238:"<em class="placeholder">Warning</em>: PDOStatement::execute(): MySQL server has gone away in <em class="placeholder">Drupal\Core\Database\Statement-&gt;execute()</em> (line <em class="placeholder">59</em> of <em class="placeholder">core/lib/Drupal/Core/Database/Statement.php</em>). Drupal\Core\Database\Statement-&gt;execute(Array, Array) (Line: 631)
Drupal\Core\Database\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 358)
Drupal\Core\Database\Driver\mysql\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 106)
Drupal\Core\Database\Query\Upsert-&gt;execute() (Line: 263)
Drupal\Core\Cache\DatabaseBackend-&gt;doSetMultiple(Array) (Line: 193)
Drupal\Core\Cache\DatabaseBackend-&gt;setMultiple(Array) (Line: 181)
Drupal\Core\Cache\DatabaseBackend-&gt;set(&#039;route:en:/traineeprograms/company/416/company_mobile/527/education_mobile/586:&#039;, Array, -1, Array) (Line: 181)
Drupal\Core\Routing\RouteProvider-&gt;getRouteCollectionForRequest(Object) (Line: 239)
Drupal\Core\Routing\Router-&gt;getInitialRouteCollection(Object) (Line: 123)
Drupal\Core\Routing\Router-&gt;matchRequest(Object) (Line: 92)
Drupal\Core\Routing\AccessAwareRouter-&gt;matchRequest(Object) (Line: 115)
Symfony\Component\HttpKernel\EventListener\RouterListener-&gt;onKernelRequest(Object, &#039;kernel.request&#039;, Object)
call_user_func(Array, Object, &#039;kernel.request&#039;, Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher-&gt;dispatch(&#039;kernel.request&#039;, Object) (Line: 127)
Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19)
";}i:1;O:25:"Drupal\Core\Render\Markup":1:{s:9:"*string";s:3245:"<em class="placeholder">Warning</em>: PDOStatement::execute(): Error reading result set's header in <em class="placeholder">Drupal\Core\Database\Statement-&gt;execute()</em> (line <em class="placeholder">59</em> of <em class="placeholder">core/lib/Drupal/Core/Database/Statement.php</em>). Drupal\Core\Database\Statement-&gt;execute(Array, Array) (Line: 631)
Drupal\Core\Database\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 358)
Drupal\Core\Database\Driver\mysql\Connection-&gt;query(&#039;INSERT INTO {cache_data} (cid, expire, created, tags, checksum, data, serialized) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6) ON DUPLICATE KEY UPDATE cid = VALUES(cid), expire = VALUES(expire), created = VALUES(created), tags = VALUES(tags), checksum = VALUES(checksum), data = VALUES(data), serialized = VALUES(serialized)&#039;, Array, Array) (Line: 106)
Drupal\Core\Database\Query\Upsert-&gt;execute() (Line: 263)
Drupal\Core\Cache\DatabaseBackend-&gt;doSetMultiple(Array) (Line: 193)
Drupal\Core\Cache\DatabaseBackend-&gt;setMultiple(Array) (Line: 181)
Drupal\Core\Cache\DatabaseBackend-&gt;set(&#039;route:en:/traineeprograms/company/416/company_mobile/527/education_mobile/586:&#039;, Array, -1, Array) (Line: 181)
Drupal\Core\Routing\RouteProvider-&gt;getRouteCollectionForRequest(Object) (Line: 239)
Drupal\Core\Routing\Router-&gt;getInitialRouteCollection(Object) (Line: 123)
Drupal\Core\Routing\Router-&gt;matchRequest(Object) (Line: 92)
Drupal\Core\Routing\AccessAwareRouter-&gt;matchRequest(Object) (Line: 115)
Symfony\Component\HttpKernel\EventListener\RouterListener-&gt;onKernelRequest(Object, &#039;kernel.request&#039;, Object)
call_user_func(Array, Object, &#039;kernel.request&#039;, Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher-&gt;dispatch(&#039;kernel.request&#039;, Object) (Line: 127)
Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19)
";}}}_sf2_meta|a:3:{s:1:"u";i:1732483767;s:1:"c";i:1732483767;s:1:"l";s:7:"2000000";}')
session_write_close() (Line: 244)
Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->save() (Line: 198)
Drupal\Core\Session\SessionManager->save() (Line: 196)
Symfony\Component\HttpFoundation\Session\Session->save() (Line: 60)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

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Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: CREATE TABLE {cache_config} ( `cid` VARCHAR(255) CHARACTER SET ascii BINARY NOT NULL DEFAULT '' COMMENT 'Primary Key: Unique cache ID.', `data` LONGBLOB NULL DEFAULT NULL COMMENT 'A collection of data to cache.', `expire` INT NOT NULL DEFAULT 0 COMMENT 'A Unix timestamp indicating when the cache entry should expire, or -1 for never.', `created` DECIMAL(14, 3) NOT NULL DEFAULT 0 COMMENT 'A timestamp with millisecond precision indicating when the cache entry was created.', `serialized` SMALLINT NOT NULL DEFAULT 0 COMMENT 'A flag to indicate whether content is serialized (1) or not (0).', `tags` LONGTEXT NULL DEFAULT NULL COMMENT 'Space-separated list of cache tags for this entry.', `checksum` VARCHAR(255) CHARACTER SET ascii COLLATE ascii_general_ci NOT NULL COMMENT 'The tag invalidation checksum when this entry was saved.', PRIMARY KEY (`cid`), INDEX `expire` (`expire`), INDEX `created` (`created`) ) ENGINE = InnoDB DEFAULT CHARACTER SET utf8mb4 COMMENT 'Storage for the cache API.'; Array ( ) in Drupal\Core\Config\CachedStorage->readMultiple() (line 105 of core/lib/Drupal/Core/Config/CachedStorage.php).

Drupal\Core\Config\CachedStorage->readMultiple(Array) (Line: 165)
Drupal\Core\Config\ConfigFactory->doLoadMultiple(Array, 1) (Line: 104)
Drupal\Core\Config\ConfigFactory->doGet('automated_cron.settings') (Line: 89)
Drupal\Core\Config\ConfigFactory->get('automated_cron.settings') (Line: 50)
Drupal\automated_cron\EventSubscriber\AutomatedCron->__construct(Object, Object, Object) (Line: 277)
Drupal\Component\DependencyInjection\Container->createService(Array, 'automated_cron.subscriber') (Line: 173)
Drupal\Component\DependencyInjection\Container->get('automated_cron.subscriber') (Line: 105)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.terminate', Object) (Line: 88)
Symfony\Component\HttpKernel\HttpKernel->terminate(Object, Object) (Line: 32)
Stack\StackedHttpKernel->terminate(Object, Object) (Line: 671)
Drupal\Core\DrupalKernel->terminate(Object, Object) (Line: 22)