diff --git a/src/routes/terminal.ts b/src/routes/terminal.ts
index 10090d5..4f11314 100644
--- a/src/routes/terminal.ts
+++ b/src/routes/terminal.ts
@@ -2,7 +2,7 @@ import yaml from 'js-yaml';
 import { throttle, uniqBy } from 'lodash';
 import { spawn } from 'node-pty';
 import os from 'os';
-import { Router, RouterResponse } from 'soxtend/server';
+import { ApiError, Router, RouterResponse } from 'soxtend/server';
 import kill from 'tree-kill';
 import { AppDataSource, ProjectRepository, TerminalLogRepository, TerminalRepository } from '../data-source';
 import { Terminal } from '../entity/Terminal';
@@ -97,12 +97,12 @@ export const addTerminalRoutes = (router: Router) => {
 		if (Object.keys(terminal).length === 0) return;
 		if (terminal.startupEnvironmentVariables) {
 			try {
-				yaml.load(terminal.startupEnvironmentVariables, {
+				const doc = yaml.load(terminal.startupEnvironmentVariables, {
 					schema: yaml.JSON_SCHEMA,
 				});
+				if (typeof doc !== 'object') throw new ApiError('Invalid YAML for startup Environment Variables', 400);
 			} catch (e) {
-				console.log('error', e);
-				throw new Error('Invalid YAML for startup Environment Variables');
+				throw new ApiError('Invalid YAML for startup Environment Variables', 400);
 			}
 		}
 		// This prevents from updating terminal object in the triggering app unnecessary.
@@ -217,7 +217,7 @@ function createPtyTerminal({
 			}) as Record<string, string>;
 			env = { ...(process.env as Record<string, string>), ...doc };
 		} catch (e) {
-			throw new Error('Invalid YAML for startup Environment Variables');
+			console.log(e);
 		}
 	let cwd = terminal.cwd;
 	if (cwd) {
diff --git a/ui/src/pages/MyTerminal/MyTerminal.tsx b/ui/src/pages/MyTerminal/MyTerminal.tsx
index 0f1dc2b..6014b67 100644
--- a/ui/src/pages/MyTerminal/MyTerminal.tsx
+++ b/ui/src/pages/MyTerminal/MyTerminal.tsx
@@ -2,7 +2,7 @@ import { debounce } from 'lodash-es';
 import { useCallback, useContext, useEffect, useMemo, useReducer } from 'react';
 import { client } from '../../utils/socket';
 import { Addons, createTerminal } from '../../utils/Terminal';
-import { Drawer, Input, Modal, AutoComplete, Form } from 'antd';
+import { Drawer, Input, Modal, AutoComplete, Form, Alert } from 'antd';
 import './MyTerminal.css';
 
 // @ts-ignore
@@ -130,7 +130,7 @@ export const MyTerminal = ({
 	mainCommandCounter: number;
 }) => {
 	const [isPatching, setIsPatching] = useState(false);
-	const { mutate: patchTerminal } = usePatchTerminal(projectId, terminal.id);
+	const { mutate: patchTerminal, error } = usePatchTerminal(projectId, terminal.id);
 
 	const [editorCommand, setEditorCommand] = useState('');
 	const [isCommandSuggestionOpen, setIsCommandSuggestionOpen] = useState(false);
@@ -422,6 +422,7 @@ export const MyTerminal = ({
 		});
 	}, [searchValue, state]);
 	if (!state) return null;
+	console.log(error);
 	return (
 		<>
 			<Drawer open={!!executionScript} onClose={() => setExecutionScript(null)}>
@@ -568,6 +569,7 @@ export const MyTerminal = ({
 					>
 						<Input.TextArea placeholder="Yaml syntax(KEY: VALUE)" />
 					</Form.Item>
+					{error && <Alert message={error?.message} type="error" />}
 				</Form>
 			</Drawer>
 		</>
diff --git a/ui/src/services/terminals.ts b/ui/src/services/terminals.ts
index bb8e603..c5ede00 100644
--- a/ui/src/services/terminals.ts
+++ b/ui/src/services/terminals.ts
@@ -115,10 +115,6 @@ export const usePatchTerminal = (
 				method: 'patch',
 			}),
 		{
-			retry: (_, error) => {
-				if (error.status === 401) return false;
-				return true;
-			},
 			...options,
 		}
 	);