not extract video dash

[shailendra-rajpoot]

show error

D/libc-netbsd(23374): getaddrinfo: www.youtube.com get result from proxy gai_error = 0
E/flutter (23374): [ERROR:flutter/lib/ui/ui_dart_state.cc(166)] Unhandled Exception: NoSuchMethodError: The method 'group' was called on null.
E/flutter (23374): Receiver: null
E/flutter (23374): Tried calling: group(0)
E/flutter (23374): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:51:5)
E/flutter (23374): #1 YouTubeExtractor._getVideoPlayerContextAsync (package:youtube_extractor/youtube_extractor.dart:228:14)
E/flutter (23374):
E/flutter (23374): #2 YouTubeExtractor.getMediaStreamsAsync (package:youtube_extractor/youtube_extractor.dart:38:31)
E/flutter (23374): #3 main (package:flick_player/main.dart:7:36)
E/flutter (23374): #4 _runMainZoned.. (dart:ui/hooks.dart:233:25)
E/flutter (23374): #5 _rootRun (dart:async/zone.dart:1190:13)
E/flutter (23374): #6 _CustomZone.run (dart:async/zone.dart:1093:19)
E/flutter (23374): #7 _runZoned (dart:async/zone.dart:1630:10)
E/flutter (23374): #8 runZonedGuarded (dart:async/zone.dart:1618:12)
E/flutter (23374): #9 _runMainZoned. (dart:ui/hooks.dart:225:5)
E/flutter (23374): #10 _startIsolate. (dart:isolate-patch/isolate_patch.dart:301:19)
E/flutter (23374): #11 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)
E/flutter (23374):

[zekkontro]

mee too. Help me Please

[fede1295]

Result of this RegExp(r"yt.setConfig({'PLAYER_CONFIG':.+?});" is empty, this causes the exception...
Anyone knows what are these configs?