Usually sudo should not be used with pamac as it has a polkit and will ask for password when is needed.
On my end:
strawberry 1.0.18-2 extra
A music player aimed at audio enthusiasts and music collectors
You might also have missed this:
So, if you still have community there, could be the issue you have.
Then, we start again:
Then
sudo pacman -Syyu strawberry
or
pamac install strawberry
And let me know what error you get.