[0903/152800.668509:INFO:main_context.cpp(136)] CEF initialized successfully.
[0903/152800.668675:INFO:main_context.cpp(138)] CEF version: 86.0.23+ga2c2edf+chromium-86.0.4240.193
[0903/152800.787177:ERROR:sandbox_linux.cc(374)] InitializeSandbox() called with multiple threads in process gpu-process.
[0903/152820.009791:INFO:LauncherAppRenderer.cpp(518)] OnContextReleased: no frame (unknown context), browser id=2
[0903/152820.100792:WARNING:xproto_util.cc(51)] X error received: serial 1591, error_code 3 (BadWindow (invalid Window parameter)), request_code 4, minor_code 0 (X_DestroyWindow)
[0903/152824.911730:INFO:LauncherAppRenderer.cpp(51)] [Info: 2021-09-03 12:28:00.640180825: LauncherMain.cpp(101)] Initiated models
[0903/152824.911915:INFO:LauncherAppRenderer.cpp(51)] [Info: 2021-09-03 12:28:00.640603065: LauncherController.cpp(399)] Constructing launcher controller with workDir: /.../.minecraft, isActive: 0
[0903/152824.912010:INFO:LauncherAppRenderer.cpp(51)] [Info: 2021-09-03 12:28:22.420658625: LauncherAppRenderer.cpp(172)] Javascript bridge extended in OnWebKitInitialized.
[0903/152825.263276:INFO:LauncherAppRenderer.cpp(518)] OnContextReleased: no frame (unknown context), browser id=3
[0903/152825.273623:INFO:LauncherAppRenderer.cpp(69)] OnBrowserDestroyed: id=3
[0903/152825.405389:WARNING:xproto_util.cc(51)] X error received: serial 1894, error_code 3 (BadWindow (invalid Window parameter)), request_code 4, minor_code 0 (X_DestroyWindow)