Self signed certificate in certificate chain

1. What is the problem? Be very detailed.
I have successfully installed odk central and forms are loading correctly on mobile odk collect app. However if I try opening the form on a browser I get this error: self signed certificate in certificate chain

I am using a custom ssl and edited the .env file to reflect this as per the install guidelines

2. What app or server are you using and on what device and operating system? Include version numbers.

Running on Ubuntu 20.0.4

Did you find a solution to this?

It sounds like you have not included your full certificate chain in fullchain.pem. Please see Enketo certificate issue on Central 0.9. Please also note that we don't support self-signed certificates at this time.