After creating this addon, firefox recommended me this addon:
https://addons.mozilla.org/en-US/firefox/addon/search_by_image
Use it instead.

Install

• License: Mozilla Public License 2.0
• Weekly downloads: 1
• Average daily users: 7
• Rating: 0/5 of 0 ratings
• Created: 2020-11-13 11:50:30
• Last updated: 2020-11-13 13:45:14
• Homepage:
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/sauce-me/
• API: {b3363757-f386-4923-8b2f-955c26a9fc0e}