I set up a self hosted turtl server and everything seemed to work fine as long as I connect via unencrypted http directly to port 8181.
I then configured my running apache instance to do a reverse proxy to port 8181.
My server uses a lets encrypt certificate. When I now try to connect with the desktop client (linux) or the android app I always get a certificate error.
I know that my certificate is valid because it works in the browser without any problems.
Error: <server addr>: an error occurred trying to connect: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed:s3_clnt.c:1269: (unable to get issuer certificate)
How can I configure the clients to accept my certificate?