Bot just stopped playing tracks

[martinpro1000]

The bot suddently does not play any tracks. I found that the AudioPlayer#startTrack returns false. This is applies for original version of lavaplayer and the lavaplayer fork 1.4.2. What does it even mean if it returns false? In javadocs nothing is mentioned.

if(!this.player.startTrack(audioTrack, true)) {
            this.queue.offer(audioTrack);
            System.out.println("started the track");
        } else {
            System.out.println("could not play the track!");
   }

track friendly exception:

com.sedmelluq.discord.lavaplayer.tools.FriendlyException: Something broke when playing the track.
at com.sedmelluq.discord.lavaplayer.tools.ExceptionTools.wrapUnfriendlyExceptions(ExceptionTools.java:44)
at com.sedmelluq.discord.lavaplayer.track.playback.LocalAudioTrackExecutor.execute(LocalAudioTrackExecutor.java:116)
at com.sedmelluq.discord.lavaplayer.player.DefaultAudioPlayerManager.lambda$executeTrack$1(DefaultAudioPlayerManager.java:348)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Suppressed: com.sedmelluq.discord.lavaplayer.tools.exception.EnvironmentInformation:
HIDDEN
Caused by: java.lang.RuntimeException: Error when extracting data EID: 2c1d3631-81ce-4dab-8b02-cf2255454e3f, mainJson
at com.sedmelluq.discord.lavaplayer.tools.ExceptionTools.throwWithDebugInfo(ExceptionTools.java:134)
at com.sedmelluq.discord.lavaplayer.source.youtube.DefaultYoutubeTrackDetailsLoader.load(DefaultYoutubeTrackDetailsLoader.java:70)
at com.sedmelluq.discord.lavaplayer.source.youtube.DefaultYoutubeTrackDetailsLoader.loadDetails(DefaultYoutubeTrackDetailsLoader.java:45)
at com.sedmelluq.discord.lavaplayer.source.youtube.YoutubeAudioTrack.loadBestFormatWithUrl(YoutubeAudioTrack.java:76)
at com.sedmelluq.discord.lavaplayer.source.youtube.YoutubeAudioTrack.process(YoutubeAudioTrack.java:42)
at com.sedmelluq.discord.lavaplayer.track.playback.LocalAudioTrackExecutor.execute(LocalAudioTrackExecutor.java:104)
... 4 more
Caused by: java.lang.RuntimeException: no PLAYER_JS_URL in youtube root EID: 765ee348-b860-491a-9320-e505d5a553a0, html
at com.sedmelluq.discord.lavaplayer.tools.ExceptionTools.throwWithDebugInfo(ExceptionTools.java:134)
at com.sedmelluq.discord.lavaplayer.source.youtube.DefaultYoutubeTrackDetailsLoader.augmentWithPlayerScript(DefaultYoutubeTrackDetailsLoader.java:290)
at com.sedmelluq.discord.lavaplayer.source.youtube.DefaultYoutubeTrackDetailsLoader.load(DefaultYoutubeTrackDetailsLoader.java:65)
... 8 more