diff --git a/web/app/components/workflow/nodes/trigger-plugin/default.ts b/web/app/components/workflow/nodes/trigger-plugin/default.ts
index c994007e82..928534e07c 100644
--- a/web/app/components/workflow/nodes/trigger-plugin/default.ts
+++ b/web/app/components/workflow/nodes/trigger-plugin/default.ts
@@ -272,7 +272,12 @@ const nodeDefault: NodeDefault<PluginTriggerNodeType> = {
             errorMessage = t('workflow.errorMsg.fieldRequired', { field: field.label })
         }
         else {
-          if (value === undefined || value === null || value === '')
+          if (
+            value === undefined
+            || value === null
+            || value === ''
+            || (Array.isArray(value) && value.length === 0)
+          )
             errorMessage = t('workflow.errorMsg.fieldRequired', { field: field.label })
         }
       })