Android: Warning symbol on the action bar

All of a sudden my app has started to generate a warning symbol on the action bar on my device (see images below).

There are no meaningful text attached to the warnings, so I have no idea about what is going on…

This can be avoided, it appears, by turning off notifications ON THE PHONE, but why/how are they appearing in the first place?

The app can be found here btw:

https://play.google.com/store/apps/details?id=com.gmail.runewinse.FamiList&hl=en

This just happened to me as well.  I side loaded a new version of an app I am testing via adb.

I’ve been side loading an app all morning, and this did not occur.

I do recall that I played around with the developer options on my phone, so I wonder if this is a warning about that.

This just happened to me as well.  I side loaded a new version of an app I am testing via adb.

I’ve been side loading an app all morning, and this did not occur.

I do recall that I played around with the developer options on my phone, so I wonder if this is a warning about that.