Then the usual debugging procedure:
- https://docs.moodle.org/36/en/Debugging
- Look at the HTML when the error happens, what is the src= of the image? Does it get displayed when you visit that URL directly in a different browser-tab?
- Follow the web developer tools of the browser.
- https://docs.moodle.org/36/en/Debugging
- Look at the HTML when the error happens, what is the src= of the image? Does it get displayed when you visit that URL directly in a different browser-tab?
- Follow the web developer tools of the browser.