502 - Web server received in iis 10

Question

Hi All,

 

I am facing 502 - Web server received an invalid response while acting as a gateway or proxy server in iis 10 in asp.net application.Please help me.

What is the main issues:-

 

I am inserting 2k records after inserting 500 records 502  error is raising and data insertion is going on in background so how i can resolve this issues?

 

 

Thank you in Advance