Need help exporting a really large PNG please.
I'm trying to create designs to use for a print on demand company (Teelaunch) and they require a design size of 16500 px x 8250 px (4GB max) for pillows. But I cannot get a file of this size to export in Illustrator. I get the error message "This option cannot complete because of an unknown error [!now]" I feel confident my laptop can handle it, I'm using Win10, and the newest version of Illustrator.
I'm new to Illustrator and design and I have no clue what to do. Please help.