SUMMARY UPnP plugin does not forward ports, although UPnP has been enabled on the router. UPnP forwards port correctly with both the Transmission and qBittorrent clients. STEPS TO REPRODUCE 1. Enable the plugin. 2. Try to forward the port. 3. Check if port forwarded with the "Open port check tool: https://www.canyouseeme.org/ OBSERVED RESULT Ports not forwarded. The following message is displayed: Error transferring http://192.168.0.1:1900/ipc server replied: Internal Server Error. The router is tp-link Archer c7, which is correctly detected. EXPECTED RESULT Ports forwarded. SOFTWARE/OS VERSIONS Operating System: KDE neon 5.24 KDE Plasma Version: 5.24.0 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.3 Kernel Version: 5.13.0-28-generic (64-bit) Graphics Platform: X11 ADDITIONAL INFORMATION
https://invent.kde.org/network/libktorrent/-/merge_requests/63 may fix this.