After running dotnet run - my Umbraco site has suddenly just crashed with the error :

C:\Users\xxxxxxxx\Documents\Repositories\DocsUmbraco10\Docs.Web\umbraco\models\HomePage.generated.cs(23,135): error CS0246: The type or namespace name '
IHomeProperties' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\xxxxxxxx\Documents\Repositories\DocsUmbraco1
0\Docs.Web\Docs.Web.csproj]
C:\Users\JuliusGoddard\Documents\Repositories\DocsUmbraco10\Docs.Web\umbraco\models\HomePage.generated.cs(23,170): error CS0246: The type or namespace name ' 
ISiteNavigationProperties' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\JuliusGoddard\Documents\Repositories\Do 
csUmbraco10\Docs.Web\Docs.Web.csproj]

Build FAILED.

I did not change anything related to "IHomeProperties" in the back office or the code - it suddenly just broke out of nowhere and now I do not have access to the back office.

Is there a known solution to this problem?

Thanks,

Julius