Hi Folks
A couple of new problems that have me baffled ( no surprise there

)
1 i've downloaded synaptic and can only run it from the command line and I keep getting this warning
synaptic:11621): Gtk-WARNING **: 19:01:39.936: Theme parsing error: gtk.css:4348:56: Using one color stop with linear-gradient() is deprecated
and the other one is to do with synaptic itself.
I am trying to install an Epson package to run the scanner and I keep getting
The following packages have unmet dependencies:
libgcc1 : Depends: gcc-10-base (= 10.1.0-1) but 10.1.0-4 is to be installed
E: Unable to correct problems, you have held broken packages.
and when I go onto synaptic to fix broken packages it doesn't seem to do anything and i can't work out which packages are broken. how do i find and fix broken packages
Where do I go from here please