Joplin An Error Occurred Windows Unresponsive Message

Operating system

Windows

Joplin version

3.6.14

Desktop version info

Joplin 3.6.14 (prod, win32)

Device: win32, Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz
Client ID: a7271a7b5efd4f9e97bd4be582800445
Sync Version: 3
Profile Version: 49
Keychain Supported: Yes
Alternative instance ID: -
Sync target: Joplin Cloud
Editor: Rich Text

Revision: 7e2765a

Backup: 1.5.1
Easy Backlinks: 1.3.1
Freehand Drawing: 4.3.0
Hotfolder: 1.2.3
Joplin to Todoist: 1.0.1

What issue do you have?

I have moved a large number of notes from OneNote into Joplin.
Having completed this I am now randomly getting this message pop up-
"Joplin An Error Occurred Windows Unresponsive"
It gives me three options and I have been selecting "Ignore" which closes the pop up and Joplin appears to continue ok.
Any ideas why this message has started to pop up?

Screenshots

Try disabling all plugins and see if that helps

Thanks, will give that a try and see if I can pin it down to one or more plugins.