The Error: No module named 'toml', was fixed 2 weeks ago, after I made a bug report. I was confused as to why is hasn't been updated here yet. In the meanwhile to make it work, you can copy the io.py from https://projects.blender.org/extensions/space_view3d_stored_views/src/branch/main/source and manually replace it where your Blender Foundation extentions files are located.
ERROR!!! v4.3 when activating addon. "No Module Named Toml". Please fix asap.
please fix error " No module named 'toml' " in blender 4.3
A good choice for conveniently switching between specific views.
Really useful