Same on my a07 waiting for an update to fix the issue

You need to go to the galaxy store and update quick share , quick share agent and quick share connectivity and go to the quick share and check it again ,It will work fine after that. Please accept my comment if it works

That's also happened in my a06 after one ui 8 update I sold it check your charger or sell it and buy a new Samsung I'm currently using a a07

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