Android Question [file] exposed beyond app through ClipData.Item.getUri()

I now get this error when trying to open the email app (Android 9) with an attachment.
Probably a permission missing but I am not sure which...

I tried to disable strict mode with this:
https://www.b4x.com/android/forum/threads/solved-java-code-for-disablestrictmode.49732/#content

but that did not work