Getting this error on build

[ghost]

C:\Program Files\dotnet\sdk\5.0.203\NuGet.targets(290,5): error MSB3202: The project file "C:\WowClassicGrindBot\WowheadDB\WowheadDB.csproj" was not found. [C:\WowClassicGrindBot\MasterOfPuppets.sln]
C:\Program Files\dotnet\sdk\5.0.203\NuGet.targets(290,5): error MSB3202: The project file "C:\WowClassicGrindBot\SharedLib\SharedLib.csproj" was not found. [C:\WowClassicGrindBot\MasterOfPuppets.sln]
C:\Program Files\dotnet\sdk\5.0.203\NuGet.targets(290,5): error MSB3202: The project file "C:\WowClassicGrindBot\Server\Server.csproj" was not found. [C:\WowClassicGrindBot\MasterOfPuppets.sln]

Build FAILED.

C:\Program Files\dotnet\sdk\5.0.203\NuGet.targets(290,5): error MSB3202: The project file "C:\WowClassicGrindBot\WowheadDB\WowheadDB.csproj" was not found. [C:\WowClassicGrindBot\MasterOfPuppets.sln]
C:\Program Files\dotnet\sdk\5.0.203\NuGet.targets(290,5): error MSB3202: The project file "C:\WowClassicGrindBot\SharedLib\SharedLib.csproj" was not found. [C:\WowClassicGrindBot\MasterOfPuppets.sln]
C:\Program Files\dotnet\sdk\5.0.203\NuGet.targets(290,5): error MSB3202: The project file "C:\WowClassicGrindBot\Server\Server.csproj" was not found. [C:\WowClassicGrindBot\MasterOfPuppets.sln]
0 Warning(s)
3 Error(s)

Any idea why this is happening?