Uncaught exception thrown in session handler.

Drupal\Core\Database\IntegrityConstraintViolationException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '0' for key 'PRIMARY': UPDATE "sessions" SET "uid"=:db_update_placeholder_0, "hostname"=:db_update_placeholder_1, "session"=:db_update_placeholder_2, "timestamp"=:db_update_placeholder_3 WHERE "sid" = :db_condition_placeholder_0; Array ( [:db_update_placeholder_0] => 0 [:db_update_placeholder_1] => 216.73.216.39 [:db_update_placeholder_2] => _sf2_meta|a:3:{s:1:"u";i:1757712302;s:1:"c";i:1757712302;s:1:"l";i:2000000;}high_contrast|a:1:{s:7:"enabled";b:0;} [:db_update_placeholder_3] => 1757712318 [:db_condition_placeholder_0] => Rwn4y2tnnmjGCICXLd-xtJpWZmMyxms3TmZMitXrJoo ) in Drupal\mysql\Driver\Database\mysql\ExceptionHandler->handleExecutionException() (line 50 of /home/naidevbusinessto/public_html/core/modules/mysql/src/Driver/Database/mysql/ExceptionHandler.php). 

Drupal\mysql\Driver\Database\mysql\ExceptionHandler->handleExecutionException(Object, Object, Array, Array) (Line: 156)
Drupal\Core\Database\Query\Update->execute() (Line: 408)
Drupal\Core\Database\Query\Merge->execute() (Line: 87)
Drupal\Core\Session\SessionHandler->write('p0VbGdQKyFlYFN5hurCGtokb3gTVLU4VtAVURnp629HFzszw', '_sf2_meta|a:3:{s:1:"u";i:1757712302;s:1:"c";i:1757712302;s:1:"l";i:2000000;}high_contrast|a:1:{s:7:"enabled";b:0;}') (Line: 95)
Drupal\Core\Session\WriteSafeSessionHandler->write('p0VbGdQKyFlYFN5hurCGtokb3gTVLU4VtAVURnp629HFzszw', '_sf2_meta|a:3:{s:1:"u";i:1757712302;s:1:"c";i:1757712302;s:1:"l";i:2000000;}high_contrast|a:1:{s:7:"enabled";b:0;}') (Line: 73)
Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy->write('p0VbGdQKyFlYFN5hurCGtokb3gTVLU4VtAVURnp629HFzszw', '_sf2_meta|a:3:{s:1:"u";i:1757712302;s:1:"c";i:1757712302;s:1:"l";i:2000000;}high_contrast|a:1:{s:7:"enabled";b:0;}')
session_write_close() (Line: 304)
Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->save() (Line: 196)
Drupal\Core\Session\SessionManager->save() (Line: 191)
Symfony\Component\HttpFoundation\Session\Session->save() (Line: 61)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
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: 49)
Asm89\Stack\Cors->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 49)
Drupal\remove_http_headers\StackMiddleware\RemoveHttpHeadersMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 718)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

The website encountered an unexpected error. Please try again later.

InvalidArgumentException: Cannot redirect to an empty URL. in Symfony\Component\HttpFoundation\RedirectResponse->setTargetUrl() (line 91 of vendor/symfony/http-foundation/RedirectResponse.php). 
Symfony\Component\HttpFoundation\RedirectResponse->__construct('') (Line: 60)
Drupal\high_contrast\HighContrastController->goBack() (Line: 50)
Drupal\high_contrast\HighContrastController->disable()
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 580)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 169)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
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: 49)
Asm89\Stack\Cors->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 49)
Drupal\remove_http_headers\StackMiddleware\RemoveHttpHeadersMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 718)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)