General information

• App source: F-Droid
• **Android Version: 5.0 and 7.0

Expected result

What is expected?

What does happen instead?

Steps to reproduce

• Trying to change the image of an item.

I think the root cause of this issue is that you use "android:fillColor" with gradient color, which only works when API Level >= 24. Therefore, I cannot see the icon "apache" in API Level < 24.
This happens in "thumb_apache.xml" and other places.

You may prepare a unique ".png" file for those icons using gradient colors in "android:fillColor"