The http.proxyHost=127.0.0.1 http.proxyPort=7890 https.proxyHost=127.0.0.1 https.proxyPort=7890 system properties seem to have been the solution. The log shows that everything is working now.

Yesterday I have tried http.proxyHost=127.0.0.1 http.proxyPort=7890 but it didn't work. Now the problem ...

Caused by: java.net.http.HttpConnectTimeoutException: HTTP connect timed out
Caused by: java.net.ConnectException: HTTP connect timed out
There's probably not much you can do. If it reliably and repeatedly doesn't work from FileBot but always works with curl, then that would be most unusual ...

I have this connection error when I use filebot cli in ubuntu.
Failed to fetch resource: https://api.themoviedb.org/3/search/tv: HTTP connect timed out
HTTP connect timed out
java.net.http.HttpConnectTimeoutException: HTTP connect timed out
at net.filebot.web.WebRequest.doRequest(Unknown Source ...