Unexpected Crash Occured

Before creating a new issue, see list of [known
issues](https://copyq.readthedocs.io/en/latest/known-issues.html).

**Describe the bug**
Copy Q was running in background (Shown on Windows taskbar icon notirication area).

**To Reproduce**
Steps to reproduce the behavior:
1. USe computer all day
2. go to Copy Q to get previously copied data
3. icon disappears from task bar as I try to click on it
4. Restart it using Desktop shortcut
5. Last saved data is from hours ago

**Expected behavior**Just keep running in the background, and if an unrecoveralbe error occurs, show some meaningful error message on next boot

**Version, OS and Environment**
(Get details from `copyq version` command if possible.)
- Application Version 7.0.0
- OS Windows 10 Enterprise - Windows Feature Experience Pack 1000.19041.1000.0
- Desktop environment, window manager (if applicable)
Processor 11th Gen Intel(R) Core(TM) i5-11500H @ 2.90GHz 2.92 GHz
Installed RAM 32.0 GB (31.7 GB usable)

System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

**Additional context**
Warning [2023-07-13 00:50:07.120] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:55.607] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:55.785] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:55.970] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:56.075] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:56.248] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:56.371] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:56.554] : ELAPSED 982 ms accessing "hasText"
Warning [2023-07-13 05:45:56.585] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:56.735] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:56.829] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:56.922] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:57.139] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:57.415] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:57.521] : ELAPSED 947 ms accessing "hasText"
Warning [2023-07-13 05:45:57.575] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:57.832] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:57.939] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:58.036] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:58.137] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:58.250] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:58.356] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:58.461] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:58.610] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:58.736] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:58.819] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:58.905] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:58.994] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:59.070] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:59.148] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:59.236] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:59.422] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:59.520] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:45:59.586] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:59.662] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:45:59.901] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:46:00.123] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:00.252] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:00.372] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:46:00.547] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:00.748] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:00.901] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:46:01.002] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:01.081] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:01.315] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:46:01.388] : ELAPSED 1314 ms accessing "text"
Warning [2023-07-13 05:46:01.412] : ELAPSED 1828 ms accessing "UTF8:text/plain"
Warning [2023-07-13 05:46:01.434] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:01.520] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 05:46:01.612] : [qt.qpa.mime] QtWarning: Unable to obtain clipboard.
Warning [2023-07-13 05:46:01.688] : Clipboard data expired, refusing to access old data
Warning [2023-07-13 05:46:01.698] : Clipboard data expired, refusing to access old data
Warning [2023-07-13 05:46:01.712] : ELAPSED 5139 ms accessing "UTF8:image/svg+xml"
ERROR [2023-07-13 09:56:34.310] : Connection lost!
ERROR [2023-07-13 09:56:34.310] : Connection lost!
Warning [2023-07-13 09:58:51.843] : [default] QtWarning: QSystemTrayIcon::setVisible: No Icon set
Warning [2023-07-13 10:17:37.437] : [qt.qpa.fonts] QtWarning: Unable to enumerate family ' "Font Awesome 6 Free Solid (CopyQ)" '
Warning [2023-07-13 10:43:20.672] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
Warning [2023-07-13 13:25:33.497] : [qt.qpa.mime] QtWarning: Retrying to obtain clipboard.
ERROR [2023-07-13 13:36:20.162] : Connection lost!
ERROR [2023-07-13 13:36:20.162] : Connection lost!
Warning [2023-07-13 23:02:44.310] : [default] QtWarning: QSystemTrayIcon::setVisible: No Icon set
Warning [2023-07-13 23:02:51.291] : [qt.qpa.fonts] QtWarning: Unable to enumerate family ' "Font Awesome 6 Free Solid (CopyQ)" '