Expose exception message in the response

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/files/lib/Controller/DirectEditingController.php

@@ -89,7 +89,7 @@ public function create(string $path, string $editorId, string $creatorId, string
 			]);
 		} catch (Exception $e) {
 			$this->logger->logException($e, ['message' => 'Exception when creating a new file through direct editing']);
-			return new DataResponse('Failed to create file', Http::STATUS_FORBIDDEN);
+			return new DataResponse('Failed to create file: ' . $e->getMessage(), Http::STATUS_FORBIDDEN);
 		}
 	}
 
@@ -106,7 +106,7 @@ public function open(string $path, string $editorId = null): DataResponse {
 			]);
 		} catch (Exception $e) {
 			$this->logger->logException($e, ['message' => 'Exception when opening a file through direct editing']);
-			return new DataResponse('Failed to open file', Http::STATUS_FORBIDDEN);
+			return new DataResponse('Failed to open file: ' . $e->getMessage(), Http::STATUS_FORBIDDEN);
 		}
 	}
 
@@ -122,7 +122,7 @@ public function templates(string $editorId, string $creatorId): DataResponse {
 			return new DataResponse($this->directEditingManager->getTemplates($editorId, $creatorId));
 		} catch (Exception $e) {
 			$this->logger->logException($e);
-			return new DataResponse('Failed to open file', Http::STATUS_INTERNAL_SERVER_ERROR);
+			return new DataResponse('Failed to obtain template list: ' . $e->getMessage(), Http::STATUS_INTERNAL_SERVER_ERROR);
 		}
 	}
 }