export png error

[GUAHBA]

when I export>export as>png

"the operation cannot complete because of an unknown error. [!now]" window pops up

export>save for web

"Could not complete this operation. An unknown error has occurred." window pops up

so I have to use photoshop for exporting png.

I read this 

https://community.adobe.com/t5/illustrator/illustrator-showing-quot-the-operation-cannot-complete-be...

and change UXP to 00UXP but still have a problem.

I remove with adobe creative cloud cleaner tool and reinstall it but still have a problem.

I'm using window 10

Its latest version

No 3rd party plugins

Wacom tablet is the only additional hardware I use

I'm only using adobe fonts. noting on the internet download.

and all fonts are fine

I tried as soon as restarting the computer every time.

[Mylenium]

Without any info about the actual document nobody can tell you much. From color management issues to some content needing to be flattened/ rasterized manually this could be anything.

Mylenium

[GUAHBA]

Artboard size is 1080*1080 px 

it's RGB

and I only used the shape tool and pen tool.

it's a really simple document and work.

[Monika Gause]

What are the file and folder names?

Can you make them using only standard letters?

What happens when you outline the text? Does it get better?

[GUAHBA]

My folder name is only in English and simple structure.

It's not a text. I made it with a bunch of rectangle shapes.

[Monika Gause]

Saving and exporting other files works?

Can you try and reset the preferences? Rename the folder because then you can revert to the old preferences if it doesn't work. https://helpx.adobe.com/illustrator/using/setting-preferences.html