Doesn't work on my Pi3b+

So i checked if samplerbox was crashing or not loading via wifi and the cmd in windows and yes sampler box is running correctly, have detected my keyboard and loaded the demo preset.

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  https://github.com/hansehv/SamplerBox
>>>>  Distribution image  2022-02-06  <<<<
> Synced with GitHub status 2022-02-06  <
> = merge of branch: 'Python3 migration' <
no track of local changes, that's for you!
==========================================
IP's: ['192.168.1.102']
Wireless: TP-Link_C10C, -45dBm: Very good
Available audio devices:
  0 bcm2835 HDMI 1: - (hw:0,0), ALSA (0 in, 8 out)
  1 bcm2835 Headphones: - (hw:1,0), ALSA (0 in, 8 out)
  2 sysdefault, ALSA (0 in, 128 out)
< 3 default, ALSA (0 in, 128 out)
Opened audio device #0 bcm2835 HDMI 1: - (hw:0,0)
  samplerate 44100Hz, blocksize=384, LFOcycle=1
  valid blocksizes: [32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384]
Opened Alsamixer: card (hw:0,x), control HDMI
We have None, we want 0 Demo
Opened input "Midi Through:Midi Through Port-0 14:0" as SMFplayer
Opened input "KOMPLETE KONTROL M32:KOMPLETE KONTROL M32 MIDI 1 24:0"
Exception in thread Thread-3:
Traceback (most recent call last):
  File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.7/threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "./modules/http_gui.py", line 212, in HTTP_Server
    httpd = server_class(server_address, handler_class)
  File "/usr/lib/python3.7/socketserver.py", line 452, in __init__
    self.server_bind()
  File "/usr/lib/python3.7/http/server.py", line 137, in server_bind
    socketserver.TCPServer.server_bind(self)
  File "/usr/lib/python3.7/socketserver.py", line 466, in server_bind
    self.socket.bind(self.server_address)
OSError: [Errno 98] Address already in use

Loaded '0 Demo', 80% free memory left

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From nowhere after another reboot and 20 minutes waiting (and no changes in anything) suddenly I could play sounds. 
So after playing some chords and stuff I stopped the Pi and reboot it and still nothing.
I tired more times but no sounds at all, just this one time ..
Weiiiiird....

I just don't understand what's hapening ! 

(Sorry for my poor english )