Windows Online Build fails with 'Illegal characters in path'

I just want to experiment a bit with a Windows 10 build but the Online Build fails with the following exception:

> [00:04:15] C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(4136,5): error MSB3021: Unable to copy file "C:\projects\tabris-js-build-template\build\platforms\windows\www\**" to "bin\x86\Release\www\**". Illegal characters in path. [C:\projects\tabris-js-build-template\build\platforms\windows\EclipseSource.Tabris.CordovaLauncher.csproj]

Attached is the full detailed log.
tia
[Windows_Build_Tabris.txt](https://github.com/eclipsesource/tabris-js/files/1054933/Windows_Build_Tabris.txt)