505 error (Additional details:502: error")

I am facing this issue in KOBO. Please help me.
"Something went wrong

We’re sorry, but there was an unexpected error while trying to serve this page.

Please try again later, or contact the support team if this happens repeatedly.

Additional details:502: error"

When I open my form, this message appears.


When I open data and download this error show.

Please kindly help me. Thank you all.

Welcome to the community, @Khtet! Would you mind sharing with us a screenshot of your issue so that we can understand your issue and help you out?