HTTP ERROR undefined error on vsf api

Hello team , i am facing a weird issue as all vsf to magento api requests goes to 500 "HTTP ERROR undefined" any thoughts on this ? why is it so ?

Hello @Hamendra_Sunthwal,

First you need to check your megento APIs independently, are they working?
Have you added magento api keys in VSF-api config?

Yeah , magento was on maintenance mode.
disabling it solved the issue.

Thanks for the response.