Stm32g0bire wont compile

I try to complie Marlin for the SKR MINI E3 V3 and get the following error:
Verbose mode can be enabled via -v, --verbose option
FileNotFoundError: [WinError 3] The system cannot find the path specified: ‘C:\Users\tom\.platformio\packages\framework-arduinoststm32\variants\MARLIN_G0B1RE’:
File “C:\Users\tom.platformio\penv\lib\site-packages\platformio\builder\”, line 186:
env.SConscript(item, exports=“env”)
File “C:\Users\tom.platformio\packages\tool-scons\scons-local-4.4.0\SCons\Script\”, line 597:
return _SConscript(self.fs, *files, **subst_kw)
File “C:\Users\tom.platformio\packages\tool-scons\scons-local-4.4.0\SCons\Script\”, line 285:
exec(compile(scriptdata, scriptname, ‘exec’), call_stack[-1].globals)
File “C:\Users\tom\Desktop\Marlin\skr mini e3 v3\Marlin-bugfix-2.1.x\Marlin-bugfix-2.1.x\buildroot\share\PlatformIO\scripts\”, line 52:
File “C:\Users\tom.platformio\python3\lib\”, line 1323:
self._accessor.mkdir(self, mode)

have looked in that location and there is not a “variants” folder. in fact from line 6: File "C:\Users\tom.platformio\packages\tool-scons thru: File "C:\Users\tom.platformio\packages\tool-scons\ are not correct thelines are totally different than in the error. howb do i get the variants folder built and populated?

Remove all folders within this folder and retry building (clean slate).