If, when trying to pick a folder to store PSP data in, you get something that looks like this:
Then, either your device is missing a folder picker entirely (which is unlikely if it's a phone, but likely on Android TV), or it's provided by a default app that has been disabled somehow.
I have not been able to figure out how this happens, but a user sent in these screenshots (in Portuguese), showing how he managed to enable it again:
It was the files app that got disabled. But for some reason,
differently of other disabled apps that could be reactivated, I
couldn't do anything.
Reinstalling the same app from play store did not solved it .
What worked: reset app preferences.
I only found it a little bit strange cause that app were disable
for a long time, and yet the problem happen just now, anyway, that
solved the problem.