fetch() or axios keeps hanging even though Lambda function sent back a result after 10 mins

I have a Lambda function to run a large query that takes 10 minutes to finish and send a response. The function has no issue to eventually return a result. However, when I use fetch() or axios to get the response, it keeps hanging even after I verified that there’s already a result from Lambda in the CloudWatch log. But if I send a small query that only takes a few seconds to finish, fetch() or axios has no issue return the response. How can I fix this?