added alphanumeric validation for url name

src/component/profile_complete/ProfileCompleteCom.jsx

@@ -21,7 +21,10 @@ const validationSchema = Yup.object().shape({
         otherwise: (schema) => schema,
     }),
     introduction: Yup.string().min(1, "Minimum 1 character").max(50, "Maximum 50 characters"),
-    url_name: Yup.string().min(6, "Minimum 6 characters").max(16, "Maximum 16 characters").required("Required"),
+    url_name: Yup.string().min(6, "Minimum 6 characters").max(16, "Maximum 16 characters").required("Required").matches(
+    /^[a-zA-Z0-9]+$/, // Regex for alphanumeric characters
+    'Must contain only alphanumeric characters' // Custom error message
+    ),
 })