Could not complete this operation. an unknown error has occurred

[nhok5E05]

I use macbook, installed photoshop CC 2019.
- Used normally, this morning updated to new macbook. go to photoshop to edit photos, save for web, error:

Could not complete this operation. an unknown error has occurred

Can anyone help me!

about me: 

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[Blanc Studio]

I am having this issue as well, my artboards are also currently glitching out and not allowing me to save..

[lambiloon]

Hi try to reset your photoshop prefernces and check...regards

[Blanc Studio]

I have done this and I have also reverted back to an older version to try and work around it.. I have also reset / rebooted my computer 

[lambiloon]

Hi think use adobe clean remove tool to complete wash it all photoshop files then use 2020 version may it help...regards