Display exceptions from plugins while refreshing board

app/Controller/BoardAjaxController.php

@@ -2,6 +2,7 @@
 
 namespace Kanboard\Controller;
 
+use Exception;
 use Kanboard\Core\Controller\AccessForbiddenException;
 use Kanboard\Model\UserMetadataModel;
 
@@ -32,6 +33,7 @@ class BoardAjaxController extends BaseController
             throw new AccessForbiddenException(e("You don't have the permission to move this task"));
         }
 
+        try {
             $result =$this->taskPositionModel->movePosition(
                 $project_id,
                 $values['task_id'],
@@ -45,6 +47,9 @@ class BoardAjaxController extends BaseController
             } else {
                 $this->response->html($this->renderBoard($project_id), 201);
             }
+        } catch (Exception $e) {
+            $this->response->html('<div class="alert alert-error">'.$e->getMessage().'</div>');
+        }
     }
 
     /**