Unknown Error When Saving File Illustrator 2022

[ahnika23465624kssl]

I'm trying to export my file as a PNG using artboards (artboard 10,000 px by 10,000 px) at 300 dpi but I keep getting the attached error message. I've tried different locations (my desktop, iCloud or DropBox) and nothing is working. 

"The operation cannot complete because of an unknown error. [!now]"

[Monika Gause]

So your file is set up at 10000 by 10000 pixekls and you want to export at exactly these dimensions? Then export at 72 ppi.