eBay requires quantity for Listing Mirror to be able to initially create the listing. So it is perfectly normal to see a new eBay listing with zero quantity in a Pending state but with no other issues.
Once inventory is entered for that product, the listing will automatically get pushed out to eBay for you!
If you think this listing should have quantity, you may also want to check out this related article: Listing is stuck in pending and showing 0 quantity.
If you're having more trouble with a Pending listing, please contact us.