Nextcloud Desktop doesn┬┤t start and no synchronisation

[/details]

Nextcloud version (eg, 18.0.2): NC 2.6.4
Operating system and version (eg, Ubuntu 20.04): Windows 10
Apache or nginx version (eg, Apache 2.4.25): - (what┬┤s that?)
PHP version (eg, 7.1): - (what┬┤s that?)

The issue you are facing:
Nextcloud Desktop doesn┬┤t start, when I click on the symbol there┬┤s short.y the blue circle indicating progress, then nothing. I┬┤ve reinstalled (without uninstalling, just re-doing the installation file), no change.
Therefore, there┬┤s no synchronisation with the browser, nor my other laptop.

Is this the first time youÔÇÖve seen this error? (Y/N): Yes

The output of your Nextcloud log in Admin > Logging: sorry - ?