[5.4] Fix Queue Worker database connection issue

src/Illuminate/Database/DetectsLostConnections.php

@@ -28,6 +28,7 @@ protected function causedByLostConnection(Exception $e)
             'SSL connection has been closed unexpectedly',
             'Error writing data to the connection',
             'Resource deadlock avoided',
+            'Transaction() on null',
         ]);
     }
 }

src/Illuminate/Queue/Worker.php

@@ -246,6 +246,8 @@ protected function getNextJob($connection, $queue)
             $this->stopWorkerIfLostConnection($e);
         } catch (Throwable $e) {
             $this->exceptions->report(new FatalThrowableError($e));
+
+            $this->stopWorkerIfLostConnection($e);
         }
     }
 
@@ -267,6 +269,8 @@ protected function runJob($job, $connectionName, WorkerOptions $options)
             $this->stopWorkerIfLostConnection($e);
         } catch (Throwable $e) {
             $this->exceptions->report(new FatalThrowableError($e));
+
+            $this->stopWorkerIfLostConnection($e);
         }
     }