I am having the same problem, but was able to list until about noon today. eBay started blocking my listings with the following server error.
Error #429: Failed getting Category Aspects. eBay said “[429] Client error: GET https://api.ebay.com/commerce/taxonomy/v1/category_tree/0/get_item_aspects_for_category?category_id=1105 resulted in a 429 Too Many Requests response: { “errors”: [ { “errorId”: 2001, “domain”: “ACCESS”, “category”: “REQUEST”, “message”: “Too many requests.”, “longMessag (truncated…) “.
