PLUGIN-NAME. needs Rhino to run in .NET Framework compatibility mode

can someone helep me with the meaning of this error messages?

These plugins are made for rhino 7 and you would need to update them to their rhino8 equivalents.

If this is not an option, then you can use SetDotNetRuntime command to run your rhino8 in “legacy framework” mode. This however will cause problems with new modern plugins. So it’s either or.

Thank you @sonderskovmathias