'Invalid expression errors when building .NET Framework solution with Github Actions

I'm trying to build and run test for my solution in Github Actions. App is written in .NET Framework 4.7.2 and when I build or test it locally with the same msbuild command it all runs fine. Whenever I run build solution one of the projects keep giving me invalid expression errors like this:

error CS1026: ) expected [D:\a\SOLUTION\PROJECT\PROJECT.csproj]
error CS1056: Unexpected character '¿' [D:\a\SOLUTION\PROJECT\PROJECT.csproj]

Here is my yml file for Github Action workflow:

name: Build and Test

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:
    runs-on: windows-2019

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2
      
    - name: Setup MSBuild
      uses: microsoft/[email protected]
      
    - name: Setup NuGet
      uses: NuGet/[email protected] 
        
    - name: Restore nuget
      run: nuget restore SOLUTION_PATH\SOLUTION.sln
      
    - name: Build
      run: msbuild SOLUTION_PATH\SOLUTION.sln /t:Rebuild -property:Configuration=Release -p:VisualStudioVersion=15.0
      
    - name: Test
      run: dotnet test --no-build --verbosity normal


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