fix(editor): Show execution error toast also if there is no error stack just message

cypress/e2e/20-workflow-executions.cy.ts

@@ -1,6 +1,7 @@
 import { WorkflowPage } from '../pages';
 import { WorkflowExecutionsTab } from '../pages/workflow-executions-tab';
 import type { RouteHandler } from 'cypress/types/net-stubbing';
+import executionOutOfMemoryServerResponse from '../fixtures/responses/execution-out-of-memory-server-response.json';
 
 const workflowPage = new WorkflowPage();
 const executionsTab = new WorkflowExecutionsTab();
@@ -72,7 +73,29 @@ describe('Current Workflow Executions', () => {
 		cy.url().should('not.include', '/executions');
 	});
 
-	it.only('should auto load more items if there is space and auto scroll', () => {
+	it('should error toast when server error message returned without stack trace', () => {
+		executionsTab.actions.createManualExecutions(1);
+		const message = 'Workflow did not finish, possible out-of-memory issue';
+		cy.intercept('GET', '/rest/executions/*', {
+			statusCode: 200,
+			body: executionOutOfMemoryServerResponse,
+		}).as('getExecution');
+
+		executionsTab.actions.switchToExecutionsTab();
+		cy.wait(['@getExecution']);
+
+		cy.getByTestId('workflow-preview-iframe')
+			.should('be.visible')
+			.its('0.contentDocument.body') // Access the body of the iframe document
+			.should('not.be.empty') // Ensure the body is not empty
+			.then(cy.wrap)
+			.find('.el-notification:has(.el-notification--error)')
+			.should('be.visible')
+			.filter(`:contains("${message}")`)
+			.should('be.visible');
+	});
+
+	it('should auto load more items if there is space and auto scroll', () => {
 		cy.viewport(1280, 960);
 		executionsTab.actions.createManualExecutions(24);
 

packages/editor-ui/src/components/WorkflowPreview.vue

@@ -14,7 +14,8 @@
 				[$style.openNDV]: nodeViewDetailsOpened,
 				[$style.show]: showPreview,
 			}"
-			:src="`${rootStore.baseUrl}workflows/demo`"
+			:src="iframeSrc"
+			data-test-id="workflow-preview-iframe"
 			@mouseenter="onMouseEnter"
 			@mouseleave="onMouseLeave"
 		/>
@@ -65,6 +66,10 @@ const insideIframe = ref(false);
 const scrollX = ref(0);
 const scrollY = ref(0);
 
+const iframeSrc = computed(() => {
+	return `${window.BASE_PATH ?? '/'}workflows/demo`;
+});
+
 const showPreview = computed(() => {
 	return (
 		!props.loading &&

packages/editor-ui/src/views/NodeView.vue

@@ -1328,7 +1328,10 @@ export default defineComponent({
 					}
 				}
 
-				if (!nodeErrorFound && data.data.resultData.error.stack) {
+				if (
+					!nodeErrorFound &&
+					(data.data.resultData.error.stack || data.data.resultData.error.message)
+				) {
 					// Display some more information for now in console to make debugging easier
 					console.error(`Execution ${executionId} error:`);
 					console.error(data.data.resultData.error.stack);