failure on export clipboard (export fail)

**Describe the bug**

when we doing the export to a file, program will say , faile to export, and no newer log shown on "show log" window in help menu

**To Reproduce**

open copyq, click file menu, click export,
select parameter, comfirm file location,
wait a little time, we will se the export error imform window

**Expected behavior**

the export should be success
**Screenshots**

**Version, OS and Environment**

the F5 way, not work for me, i operated, but no work
so i get a screen shot here

- Application Version (for example 10.0.0)
- OS (for example Windows 11, Ubuntu 24.04, Fedora 42, macOS Sonoma 14.4)
its windows 10

- Desktop environment, window manager (if applicable)
——
- Installation method (for example Windows installer, portable zip, Flatpak, Homebrew, manual build)
should be windows installer first on 2020, and i replace them with portable zip tonight

**Additional context**

i am a old user of copyq, since about 2020, i can even see a backup file on may 2025,
and i setted a lot amout limit (9999) on this time

i doubt (but i dont want) the export failure might be cause by the too much history amout

i wanna export these, as a backup, just in case of....

but, anyway, thank you sir! that is a good program/project indeed!