Weird, Try to restart your wallet.
Also you can reinstall your wallet:

If you have sync issues:
1. Download this files: https://drive.google.com/file/d/1OFloCiZnlu2vWXWaVqND8PzYJmWNknSz/view?usp=sharing
2. Backup your wallet.dat
3. Clear everything except wallet.dat
4. Put in files from zip and restart wallet.

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