Python Youtube-upload - Can't Upload Thumbnail Even Though My Account Is Authorised

I'm trying to upload a video with a thumbnail using the python youtube-upload tool. The video uploads just fine but after uploading I get this message: Using client secrets: D:\Pro

Solution 1:

Check if your account is verified by clicking this verify link:

"Create custom video thumbnail If your account is verified or you have live streaming access, you may have the ability to upload custom thumbnails for your video uploads."

After that, try running your code again.

Solution 2:

OK I've realised the problem now and it was because when I did the account verification I was logged into a different google account .________.