[Bug]: Hangs on startup

[SwampFalc]

Describe the bug
Since yesterday (12th of may) my prospect-mail fails to start up. It just hangs at the "opening the envelope" animation.

To Reproduce
Steps to reproduce the behavior:

1. Start prospect-mail
2. Wait for it to fully load
3. Wait forever...

Expected behavior
A normal startup.

Desktop (please complete the following information):

• OS: Ubuntu 20.04
• Installation source: snap
• Version 0.5.4 (ie. stable)

Additional context
FYI, using a browser to open my mailbox works fine.

[mehmetcovutkodpit]

Same issue with my environment.
OS:ubuntu 24.04 lts
Installation source: Snap
Version: 0.5.4

Extra information. When I uninstall and reinstall it again, It works first time. After reboot, It stucks on startup again.

[mehmetcovutkodpit]

When I tried to start from terminal I get this logs:
`prospect-mail

(prospect-mail:18025): Gtk-WARNING **: 19:08:01.811: Theme parsing error: gtk.css:1413:23: 'font-feature-settings' is not a valid property name

(prospect-mail:18025): Gtk-WARNING **: 19:08:01.815: Theme parsing error: gtk.css:3286:25: 'font-feature-settings' is not a valid property name

(prospect-mail:18025): Gtk-WARNING **: 19:08:01.816: Theme parsing error: gtk.css:3748:23: 'font-feature-settings' is not a valid property name
libGL error: MESA-LOADER: failed to open radeonsi (search paths /snap/prospect-mail/44/gnome-platform/usr/lib/x86_64-linux-gnu/dri)
libGL error: failed to load driver: radeonsi
libGL error: MESA-LOADER: failed to open radeonsi (search paths /snap/prospect-mail/44/gnome-platform/usr/lib/x86_64-linux-gnu/dri)
libGL error: failed to load driver: radeonsi
libGL error: MESA-LOADER: failed to open swrast (search paths /snap/prospect-mail/44/gnome-platform/usr/lib/x86_64-linux-gnu/dri)
libGL error: failed to load driver: swrast
[18116:0513/190801.916199:ERROR:angle_platform_impl.cc(44)] Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[18116:0513/190801.916380:ERROR:gl_display.cc(520)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[18116:0513/190801.916440:ERROR:gl_display.cc(795)] eglInitialize OpenGL failed with error EGL_NOT_INITIALIZED, trying next display type
[18116:0513/190801.917457:ERROR:angle_platform_impl.cc(44)] Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[18116:0513/190801.917564:ERROR:gl_display.cc(520)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[18116:0513/190801.917619:ERROR:gl_display.cc(795)] eglInitialize OpenGLES failed with error EGL_NOT_INITIALIZED
[18116:0513/190801.917670:ERROR:gl_display.cc(829)] Initialization of all EGL display types failed.
[18116:0513/190801.917770:ERROR:gl_ozone_egl.cc(26)] GLDisplayEGL::Initialize failed.
[18116:0513/190801.921462:ERROR:angle_platform_impl.cc(44)] Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[18116:0513/190801.921557:ERROR:gl_display.cc(520)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[18116:0513/190801.921611:ERROR:gl_display.cc(795)] eglInitialize OpenGL failed with error EGL_NOT_INITIALIZED, trying next display type
[18116:0513/190801.922552:ERROR:angle_platform_impl.cc(44)] Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
ERR: Display.cpp:1056 (initialize): ANGLE Display::initialize error 12289: Could not create a backing OpenGL context.
[18116:0513/190801.922648:ERROR:gl_display.cc(520)] EGL Driver message (Critical) eglInitialize: Could not create a backing OpenGL context.
[18116:0513/190801.922702:ERROR:gl_display.cc(795)] eglInitialize OpenGLES failed with error EGL_NOT_INITIALIZED
[18116:0513/190801.922766:ERROR:gl_display.cc(829)] Initialization of all EGL display types failed.
[18116:0513/190801.922818:ERROR:gl_ozone_egl.cc(26)] GLDisplayEGL::Initialize failed.
[18116:0513/190801.924223:ERROR:viz_main_impl.cc(196)] Exiting GPU process due to errors during initialization
`

[Smithor]

Same issue with my environment. OS:ubuntu 24.04 lts Installation source: Snap Version: 0.5.4

Extra information. When I uninstall and reinstall it again, It works first time. After reboot, It stucks on startup again.

Ran into the same issue, reinstalled with success. Problem appears to be something with the cookies db, deleting that db specifically allows program to run properly (although of course having to log-in again and re-verify). Haven't looked specifically, but there is something in there that is causing the hangup.

In the meantime, deleting Cookies sqlite db will allow you to log in again and open the program as normal. No idea if persistent beyond restart yet.

[SwampFalc]

I can confirm deleting the Cookies file allows me to log in, once. The next day I have to delete it again, or else the same issue occurs.