Cause
I get a generic error when trying to publish
Solution 1
Check a few points above: it may be because you tried to push an “Active” product without accepting to pay Etsy fees.
Solution 2 (Remove special characters and Retry)
Some users also got errors because they had special characters in their product card or description. Some quotation marks, for instance, generate an error from Etsy, despite all systems are now using UTF-8 sets.