Generic error VLSUB 0.11.0 Windows 10 x64 and VLC 3.0.5

[Acominatus]

main debug: auto hiding mouse cursor
main debug: auto hiding mouse cursor
main debug: auto hiding mouse cursor
qt debug: activating or triggering extension 'VLsub 0.11.0'
lua debug: Reactivating extension VLsub 0.11.0
lua debug: [VLsub] Welcome
lua debug: [VLSub] Working directory: C:\Users\rgc\AppData\Roaming\vlc\lua\extensions\userdata\vlsub
lua debug: [VLSub] Loading config file: C:\Users\rgc\AppData\Roaming\vlc\lua\extensions\userdata\vlsub\vlsub_conf.xml
lua debug: [VLSub] Video URI: http://xx.xx.xx:8080/movie/xxx@xxxxx.es/xxxx/xxxx.mp4
lua warning: Error while running script C:\Program Files\VideoLAN\VLC\lua\extensions\VLSub.luac, function activate(): ...ackage/win32/../../../share/lua/extensions/VLSub.lua:1244: bad argument #1 to 'gsub' (string expected, got nil)
lua error: Could not activate extension!
lua debug: Deactivating 'VLsub 0.11.0'
main debug: auto hiding mouse cursor
main debug: auto hiding mouse cursor