.mdb file generation error

[hanseul1795]

Steps to Reproduce

1. build with Xamarin 10.0.99.79 (latest stable build from Azure)
2. .mdb file could not be found

Expected Behavior

Build succesfully

Actual Behavior

Build fails

Version Information

Xamarin version10.0.99.79

Log File

[8/30/2019 5:03:59 PM] Warning: C:\Xamarin.Android\10.0.99.79\ $MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1994,2): warning : Could not load file or assembly 'Xamarin.Android.Cecil, Version=0.11.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756' or one of its dependencies. The system cannot find the file specified.

[8/30/2019 5:03:59 PM] Warning: C:\Xamarin.Android\10.0.99.79\ $MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1994,2): warning : at Pdb2Mdb.Converter.Convert(String filename)

[8/30/2019 5:03:59 PM] Warning: C:\Xamarin.Android\10.0.99.79\ $MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1994,2): warning : at Xamarin.Android.Tasks.ConvertDebuggingFiles.Execute()

[8/30/2019 5:04:10 PM] Error: C:\Xamarin.Android\10.0.99.79\ $MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1995,2): error MSB3375: The file "C:\XaLaunchANMP\bin\Debug\XaLaunchANMP.dll.mdb" does not exist

[8/30/2019 5:04:11 PM] Error: C:\Xamarin.Android\10.0.99.79\ $MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1995,2): error MSB3375: The file "C:\XaLaunchANMP\bin\Debug\Game.Collections.dll.mdb" does not exist.

[grendello]

@hanseul1795 Could you try uninstalling Xamarin.Android and installing it from scratch again? It might be an issue with a failed install where one of the required files wasn't placed on your disk.

@pjcollins are we sure all the required files are included in the vsix for the XA version mentioned in the OP?

@jonathanpeppers might it be an issue with the .mdb files not being generated at all and yet somehow expected to be there?

[hanseul1795]

@grendello This issue happened in 10.0.0.4 version too. I just replaced Java.Interop.Tools.Cecil.dll , Xamarin.Android.Cecil.dll and Xamarin.Android.Cecil.Mdb.dll files from 9.X version. It worked.
But replacing those files in 10.0.99.79 version doesn't work.

Reinstalling it from scratch doesn't work either.

[jonathanpeppers]

@hanseul1795 can you attach a diagnostic build log?

We saw something like this on our CI from changes in how we use Mono, but it was fixed here. I'm not sure how it's happening for you...

[jonpryor]

Our team is unable to investigate this issue further without the requested information. Please update to the latest version of the product and if the problem still occurs, reply with the requested information.