diff --git a/web/app/components/workflow/nodes/_base/components/input-support-select-var.tsx b/web/app/components/workflow/nodes/_base/components/input-support-select-var.tsx
index 97ab4c819a..02cf745ad7 100644
--- a/web/app/components/workflow/nodes/_base/components/input-support-select-var.tsx
+++ b/web/app/components/workflow/nodes/_base/components/input-support-select-var.tsx
@@ -11,6 +11,7 @@ import { Variable02 } from '@/app/components/base/icons/src/vender/solid/develop
 import TooltipPlus from '@/app/components/base/tooltip-plus'
 
 type Props = {
+  instanceId?: string
   className?: string
   placeholder?: string
   placeholderClassName?: string
@@ -24,6 +25,7 @@ type Props = {
 }
 
 const Editor: FC<Props> = ({
+  instanceId,
   className,
   placeholder,
   placeholderClassName,
@@ -52,6 +54,7 @@ const Editor: FC<Props> = ({
     <div className={cn(className, 'relative')}>
       <>
         <PromptEditor
+          instanceId={instanceId}
           className={cn(promptMinHeightClassName, '!leading-[18px]')}
           placeholder={placeholder}
           placeholderClassName={placeholderClassName}
diff --git a/web/app/components/workflow/nodes/_base/components/readonly-input-with-select-var.tsx b/web/app/components/workflow/nodes/_base/components/readonly-input-with-select-var.tsx
index 7c36b10188..e92e025cc4 100644
--- a/web/app/components/workflow/nodes/_base/components/readonly-input-with-select-var.tsx
+++ b/web/app/components/workflow/nodes/_base/components/readonly-input-with-select-var.tsx
@@ -38,11 +38,11 @@ const ReadonlyInputWithSelectVar: FC<Props> = ({
 
       const value = vars[index].split('.')
       const isSystem = isSystemVar(value)
-      const node = (isSystem ? startNode : getNodeInfoById(availableNodes, value[0])).data
+      const node = (isSystem ? startNode : getNodeInfoById(availableNodes, value[0]))?.data
       const varName = `${isSystem ? 'sys.' : ''}${value[value.length - 1]}`
       const type = (() => {
         let type = VarType.string
-        let curr: any = node.vars
+        let curr: any = node?.vars
         if (!curr)
           return type