@markjosi Thanks for reply, but unfurtunately adding an exclusion didn't solve the problem.
It behave in same way and i get still the same error messages.

Image previews in My Flow not showing.
(it's ok on phone, but it doesn't work on pc)

When i inspect the page i got these errors:

● Mixed Content: The page at 'https://web.flow.opera.com/ext/v1/ind▅▅▅▅▅▅▅▅▅▅5.html' was loaded over HTTPS, but requested an insecure element 'http://mon▅▅▅▅▅▅▅▅▅▅▅▅▅imgs/thumbnail_wide.png'. This request was automatically upgraded to HTTPS, For more information see https://blog.chromium.org/2019/10/no-more-mixed-messages-about-https.html

● Failed to load resource: the server responded with a status of 403 ()

● Error in event handler: ReferenceError: handleGXPrefChange is not defined
at OperaTouchBackground.handleMessage (<URL>)