Cannot Export Print Quality PNG from Illustrator 2021 Mac OS Catalina
Every time I try to export my large print quality files from Illustrator as .png, I get an error message. The Operation Cannot Complete Because of an Unknown Error [!now] I am trying to maintain the 300dpi quality because this is how my printer accepts files. (As .png.) My Illustrator file is 10000 x 10000 pixels at 300 dpi. I have tried it as 150 dpi and all of the export settings and always get the error message. I see on your forums that this has been going on for many years and that I'm not the only designer to experience this issue. Can you please help?
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       Paul Hulligan
    
 commented Paul Hulligan
    
 commentedA fix, kind of... I just had this problem myself. At first it all worked fine, but I added a new element (PNG image), I then came across this error message when exporting. I found that when I delete the new element, it then worked. I'm no expert, but my advice would be to test removing elements and retry until it works. 
