I installed EasyEffects and it wont start

I installed easyeffects and it wont start.I started with G_MESSAGES_DEBUG and it gives me this:

G_MESSAGES_DEBUG=easyeffects easyeffects
(process:2188): easyeffects-DEBUG: 11:54:33.732: easyeffects version: 6.2.3
(process:2188): easyeffects-DEBUG: 11:54:33.736: main: locale directory: /usr/share/locale
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.742: presets_manager: system input presets directory: "/etc/easyeffects/input";  
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.742: presets_manager: system input presets directory: "/etc/xdg/easyeffects/input";  
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.742: presets_manager: system input presets directory: "/home/sergio/.config/kdedefaults/easyeffects/input";  
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.742: presets_manager: system output presets directory: "/etc/easyeffects/output";  
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.742: presets_manager: system output presets directory: "/etc/xdg/easyeffects/output";  
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.742: presets_manager: system output presets directory: "/home/sergio/.config/kdedefaults/easyeffects/output";  
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.742: presets_manager: user presets directory already exists: /home/sergio/.config/easyeffects/
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.743: presets_manager: user presets directory already exists: /home/sergio/.config/easyeffects/input
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.743: presets_manager: user presets directory already exists: /home/sergio/.config/easyeffects/output
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.743: presets_manager: user presets directory already exists: /home/sergio/.config/easyeffects/autoload/input
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.743: presets_manager: user presets directory already exists: /home/sergio/.config/easyeffects/autoload/output

(easyeffects:2188): Gtk-WARNING **: 11:54:33.850: Unknown key gtk-button-images in /home/sergio/.config/gtk-4.0/settings.ini

(easyeffects:2188): Gtk-WARNING **: 11:54:33.850: Unknown key gtk-menu-images in /home/sergio/.config/gtk-4.0/settings.ini

(easyeffects:2188): Gtk-WARNING **: 11:54:33.850: Unknown key gtk-toolbar-style in /home/sergio/.config/gtk-4.0/settings.ini
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.927: pipe_manager: compiled with PipeWire: 0.3.44
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.927: pipe_manager: linked to PipeWire: 0.3.44
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: core version: 0.3.44
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: core name: pipewire-0
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: found metadata: settings
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: found metadata: default
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: found metadata: route-settings
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: Audio/Sink 40 alsa_output.pci-0000_00_05.0.analog-stereo with timestamp 1643554473940411586 was added
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: Audio/Source 41 alsa_input.pci-0000_00_05.0.analog-stereo with timestamp 1643554473940495186 was added
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: Audio/Sink 86 easyeffects_sink with timestamp 1643554473940559772 was added
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.940: pipe_manager: Audio/Source/Virtual 85 easyeffects_source with timestamp 1643554473940590650 was added
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.942: pipe_manager: new metadata property: 0, default.audio.sink, Spa:String:JSON, { "name": "alsa_output.pci-0000_00_05.0.an
alog-stereo" }
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.942: pipe_manager: new metadata property: 0, default.audio.source, Spa:String:JSON, { "name": "alsa_input.pci-0000_00_05.0.a
nalog-stereo" }
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.942: pipe_manager: easyeffects_sink node successfully retrieved with id 86 and timestamp 1643554473940559772
(easyeffects:2188): easyeffects-DEBUG: 11:54:33.942: pipe_manager: easyeffects_source node successfully retrieved with id 85 and timestamp 1643554473940590650
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.027: lv2_wrapper: http://lsp-plug.in/plugins/lv2/sc_compressor_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.068: lv2_wrapper: http://lsp-plug.in/plugins/lv2/comp_delay_x2_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.126: lv2_wrapper: http://lsp-plug.in/plugins/lv2/para_equalizer_x32_lr requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.222: lv2_wrapper: http://lsp-plug.in/plugins/lv2/sc_limiter_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.243: lv2_wrapper: http://lsp-plug.in/plugins/lv2/loud_comp_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.261: lv2_wrapper: urn:zamaudio:ZaMaximX2 requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.261: lv2_wrapper: urn:zamaudio:ZaMaximX2 requires feature: http://lv2plug.in/ns/ext/options#options
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.298: lv2_wrapper: http://lsp-plug.in/plugins/lv2/sc_mb_compressor_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.350: soe: rnnoise using the default model
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.382: soe: output_level successfully connected to PipeWire graph
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.385: soe: spectrum successfully connected to PipeWire graph
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.464: lv2_wrapper: http://lsp-plug.in/plugins/lv2/sc_compressor_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.503: lv2_wrapper: http://lsp-plug.in/plugins/lv2/comp_delay_x2_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.568: lv2_wrapper: http://lsp-plug.in/plugins/lv2/para_equalizer_x32_lr requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.663: lv2_wrapper: http://lsp-plug.in/plugins/lv2/sc_limiter_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.682: lv2_wrapper: http://lsp-plug.in/plugins/lv2/loud_comp_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.701: lv2_wrapper: urn:zamaudio:ZaMaximX2 requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.701: lv2_wrapper: urn:zamaudio:ZaMaximX2 requires feature: http://lv2plug.in/ns/ext/options#options
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.745: lv2_wrapper: http://lsp-plug.in/plugins/lv2/sc_mb_compressor_stereo requires feature: http://lv2plug.in/ns/ext/urid#map
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.804: sie: rnnoise using the default model
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.837: sie: output_level successfully connected to PipeWire graph
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.840: sie: spectrum successfully connected to PipeWire graph
easyeffects-INFO: 11:54:34.853: application: disabling global bypass
(easyeffects:2188): easyeffects-DEBUG: 11:54:34.864: application_ui: Icon Theme breeze detected
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
easyeffects: xcb_io.c:269: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
Aborted (core dumped)

What could it be? Something about gtk4 installation? I think I used all packages required by pipewire and easyeffects.

I found the problem, I am on a VirtualBox machine, and it only accept one CPU. ???

this could be the issue already existing files … you could try moving them to backup files to see if it solves the issue:

mv /home/sergio/.config/easyeffects /home/sergio/.config/easyeffects.bak

but it could be something related to graphics like mesa also I am not sure