Fix new booru api rules

booru_utils.py

@@ -89,10 +89,13 @@ def create_post(
 
         return post_id
     else:
-        print(
-            f"Failed to post upload ID {upload_id}. Status code: {response.status_code}"
+        logging.error(
+            "Failed to post upload ID %s. Status code: %s. Response: %s",
+            upload_id,
+            response.status_code,
+            response.text,
         )
-        print(f"Response: {response.text}")
+        return None
 
 
 def find_pool_by_name(api_key, username, danbooru_url, pool_name):