Errors Creating App Package (UWP, Appx) - fatal error CMF1106: failed to open input PDB file for reading - msbuild

Question

I'm getting errors when Creating App Packages for a UWP Win 10 application.
On my machine the error is:
C:\Users\Developer\.nuget\packages\nodatime\2.4.0\lib\netstandard2.0\NodaTime.pdb : fatal error CMF1106: failed to open input PDB file for reading (PDB error code = 11)3 input PDB file is not generated by /DEBUG:fastlinkW must read and agree to the Data Collection Policy at MSPDBCMF : fatal error CMF1000: internal error
The pdb file exists in the mentioned directory: C:\Users\Developer\.nuget\packages\nodatime\2.4.0\lib\netstandard2.0
On a hosted VSTS build the error message is even more cryptic:
C:\Users\VssAdministrator\.nuget\packages\nodatime\2.4.0\lib\netstandard2.0\NodaTime.pdb : fatal error CMF1106: failed to open input PDB file for reading (PDB error code = 11)3 input PDB file is not generated by /DEBUG:fastlinkW must read and agree to the Data Collection Policy at ??? before using /errorreport:send1 warning treated as error; the PDB file is intact# specified output filename is too long (exceeding 0 characters)
Note 1: On my machine the package is actaully successfully created but on the VSTS build the step fails as it detects the error in logs and stops.
Note 2: I'm pretty sure this is not NodaTime specific. This is about something else...
My msbuild switches are:
/p:AppxBundlePlatforms="$(BuildPlatform)"
/p:AppxPackageDir="$(Build.ArtifactStagingDirectory)\AppxPackages\"
/p:AppxBundle=Never
/p:UapAppxPackageBuildMode=StoreUpload
I am now trying with extra /p:DebugSymbols=false /p:DebugType=None, but even if it fails, I would like to understand and eliminate the 'fastlink' errors.

Answer 1

Explicitly setting DebugType to pdbonly worked in my case, but not sure if you need portable debug symbols or not, so this might not be an option for you.
<PropertyGroup>
<DebugType>pdbonly</DebugType>
</PropertyGroup>