hook.js:608 Query data cannot be undefined. Please make sure to return a value other than undefined

what to do?

3 Replies

Hi @Shahzaib. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- This error message is related to a common issue in refine when using data fetching hooks. Based on the knowledge sources provided, here are some potential solutions: 1. Check your data provider implementation: Make sure your data provider's methods (like getList, getOne, etc.) are returning the expected data structure. For example, in the Supabase data provider, you may need to specify fields to select:

   const { formProps, saveButtonProps } = useForm({
       meta: {
           select: "*",
       },
   });

   const { formProps, saveButtonProps } = useForm({
       meta: {
           select: "*",
       },
   });

Source: GitHub Issue #5679 2. Use optional chaining: When accessing nested properties from your data, use optional chaining to prevent errors when the data is not yet loaded:

   <p>User: {user?.names?.firstName}</p>

   <p>User: {user?.names?.firstName}</p>

Source: Common useState Mistakes 3. Check your query implementation: Ensure that your query function is always returning a value, even if it's null. Avoid returning undefined. 4. Verify your resource configuration: Make sure the resource you're querying is properly configured in your Refine setup. If these solutions don't resolve your issue, you may need to provide more context about your specific implementation, including the hook you're using and your data provider setup, to get more targeted assistance. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•3w ago

<@815486644152958986> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

quickest-silverOP•3w ago

i am trying to load events: const { data, isLoading: eventsLoading, error } = useList({
resource: "events", meta: { headers: accessToken ? { Authorization: Bearer ${accessToken}, } : {}, gqlQuery: DASHBOARD_CALENDAR_UPCOMING_EVENTS_QUERY,

}, queryOptions: { onError: (error) => { console.log('Auth token:', localStorage.getItem("access_token")); console.log('Query error:', error); } } }) but giving this error: undefined

hook.js:608 Query data cannot be undefined. Please make sure to return a value other than undefined

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