Problem restoring
Hello
I deployed ERT next to my Ethercalc container behind an Nginx proxy.
Restore shows success in the web ui but the Ethercalc sheet content is not restored.
Setting MOJO_LOG_LEVEL=debug and relaunching ERT helped a bit by showing a connection to Ethercalc using an http scheme instead of HTTPS.
Nginx is configured to block plain http connection and send a redirect to the clients but this redirect is silently ignored by ERT even though Nginx is configured to pass X-Forward-Proto to ERT as documented in INSTALL.md file.
Setting MOJO_MAX_REDIRECTS=3 (there's only one redirect anyway) helped, but instead of restoring the sheet/room, a blank one is generated.
Edit: issue described above about ERT not properly detecting http scheme used was not related to ERT but to our chained proxies. But for reference, http redirect is not properly handled by ERT: when enabled, sheet is not restored with empty content. Solution was to force https scheme.