refactor: Improve warnings and error messages to users about sharing

packages/cli/src/UserManagement/routes/auth.ts

@@ -77,22 +77,25 @@ export function authenticationMethods(this: N8nApp): void {
 			}
 
 			if (config.get('userManagement.isInstanceOwnerSetUp')) {
-				const error = new Error('Not logged in');
-				// @ts-ignore
-				error.httpStatusCode = 401;
-				throw error;
+				throw new ResponseHelper.ResponseError('Not logged in', undefined, 401);
 			}
 
 			try {
 				user = await Db.collections.User.findOneOrFail({ relations: ['globalRole'] });
 			} catch (error) {
-				throw new Error(
+				throw new ResponseHelper.ResponseError(
 					'No users found in database - did you wipe the users table? Create at least one user.',
+					undefined,
+					500,
 				);
 			}
 
 			if (user.email || user.password) {
-				throw new Error('Invalid database state - user has password set.');
+				throw new ResponseHelper.ResponseError(
+					'Invalid database state - user has password set.',
+					undefined,
+					500,
+				);
 			}
 
 			await issueCookie(res, user);

packages/cli/src/credentials/credentials.controller.ee.ts

@@ -64,7 +64,7 @@ EECredentialsController.get(
 
 		if (!credential) {
 			throw new ResponseHelper.ResponseError(
-				`Credential with ID "${credentialId}" could not be found.`,
+				'Could not load the credential. If you think this is an error, ask the owner to share it with you again',
 				undefined,
 				404,
 			);

packages/cli/src/credentials/credentials.controller.ts

@@ -160,7 +160,7 @@ credentialsController.patch(
 				userId: req.user.id,
 			});
 			throw new ResponseHelper.ResponseError(
-				`Credential with ID "${credentialId}" could not be found to be updated.`,
+				'Credential not found to be updated. You can only update credentials owned by you',
 				undefined,
 				404,
 			);
@@ -218,7 +218,7 @@ credentialsController.delete(
 				userId: req.user.id,
 			});
 			throw new ResponseHelper.ResponseError(
-				`Credential with ID "${credentialId}" could not be found to be deleted.`,
+				'Credential not found to be deleted. You can only removed credentials owned by you',
 				undefined,
 				404,
 			);

packages/cli/src/workflows/workflows.controller.ee.ts

@@ -87,7 +87,7 @@ EEWorkflowController.get(
 
 		if (!workflow) {
 			throw new ResponseHelper.ResponseError(
-				`Workflow with ID "${workflowId}" could not be found.`,
+				`Workflow with ID "${workflowId}" does not exist`,
 				undefined,
 				404,
 			);
@@ -96,7 +96,11 @@ EEWorkflowController.get(
 		const userSharing = workflow.shared?.find((shared) => shared.user.id === req.user.id);
 
 		if (!userSharing && req.user.globalRole.name !== 'owner') {
-			throw new ResponseHelper.ResponseError(`Forbidden.`, undefined, 403);
+			throw new ResponseHelper.ResponseError(
+				'It looks like you cannot access this workflow. Ask the owner to share it with you.',
+				undefined,
+				403,
+			);
 		}
 
 		return EEWorkflows.addCredentialsToWorkflow(
@@ -140,7 +144,7 @@ EEWorkflowController.post(
 			EEWorkflows.validateCredentialPermissionsToUser(newWorkflow, allCredentials);
 		} catch (error) {
 			throw new ResponseHelper.ResponseError(
-				'The workflow contains credentials that you do not have access to',
+				'The workflow you trying to save contains credentials not shared with you',
 				undefined,
 				400,
 			);
@@ -169,7 +173,9 @@ EEWorkflowController.post(
 
 		if (!savedWorkflow) {
 			LoggerProxy.error('Failed to create workflow', { userId: req.user.id });
-			throw new ResponseHelper.ResponseError('Failed to save workflow');
+			throw new ResponseHelper.ResponseError(
+				'An error occurred while saving your workflow. Please try again.',
+			);
 		}
 
 		if (tagIds && !config.getEnv('workflowTagsDisabled') && savedWorkflow.tags) {

packages/cli/src/workflows/workflows.controller.ts

@@ -223,7 +223,7 @@ workflowsController.get(
 				userId: req.user.id,
 			});
 			throw new ResponseHelper.ResponseError(
-				`Workflow with ID "${workflowId}" could not be found.`,
+				'Could not load the workflow - you can only access workflows owned by you',
 				undefined,
 				404,
 			);
@@ -298,7 +298,7 @@ workflowsController.delete(
 				userId: req.user.id,
 			});
 			throw new ResponseHelper.ResponseError(
-				`Workflow with ID "${workflowId}" could not be found to be deleted.`,
+				'Could not delete the workflow - you can only remove workflows owned by you',
 				undefined,
 				400,
 			);

packages/cli/src/workflows/workflows.services.ts

@@ -197,15 +197,15 @@ export class WorkflowsService {
 				userId: user.id,
 			});
 			throw new ResponseHelper.ResponseError(
-				`Workflow with ID "${workflowId}" could not be found to be updated.`,
+				'You do not have permission to update this workflow. Ask the owner to share it with you.',
 				undefined,
 				404,
 			);
 		}
 
 		if (!forceSave && workflow.hash !== '' && workflow.hash !== shared.workflow.hash) {
 			throw new ResponseHelper.ResponseError(
-				`Workflow ID ${workflowId} cannot be saved because it was changed by another user.`,
+				'We are sorry, but the workflow has been changed in the meantime. Please reload the workflow and try again.',
 				undefined,
 				400,
 			);