Additional uncaught exception thrown while handling exception.

Original

Error: Call to undefined function Drupal\Core\EventSubscriber\error_log() in Drupal\Core\EventSubscriber\ExceptionLoggingSubscriber->onError() (line 74 of /var/www/clients/client1/web62/web/core/lib/Drupal/Core/EventSubscriber/ExceptionLoggingSubscriber.php).

Drupal\Core\EventSubscriber\ExceptionLoggingSubscriber->onError() (Line: 118)
Drupal\Core\EventSubscriber\ExceptionLoggingSubscriber->onException() (Line: 246)
Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}() (Line: 206)
Symfony\Component\EventDispatcher\EventDispatcher->callListeners() (Line: 56)
Symfony\Component\EventDispatcher\EventDispatcher->dispatch() (Line: 241)
Symfony\Component\HttpKernel\HttpKernel->handleThrowable() (Line: 91)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 203)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 140)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 89)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 38)
Drupal\mercury_editor\StackMiddleware\AjaxPageState->handle() (Line: 53)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 54)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 745)
Drupal\Core\DrupalKernel->handle() (Line: 19)

Additional

Error: Call to undefined function error_log() in _drupal_log_error() (line 185 of /var/www/clients/client1/web62/web/core/includes/errors.inc).

_drupal_log_error() (Line: 122)
_drupal_exception_handler()