Hello,
I found the error in debug mode. After this error package was not created and data was not synced successful.
The problem is with some temp files, they are delete during spot
[1]110C.16F4::2019-11-25 09:31:13.274 [Microsoft-User Experience Virtualization-App Agent]Packager: PackageFileException - [Package creation failed: [Failed to creatge package file C:\Users\sa.uevx\AppData\Local\Microsoft\UEV\N-CS-CON-01552\App_Firefox\Current\App_Firefox.pkgx
due to file system error.: boost::filesystem::file_size: The system cannot find the file specified: "C:\Users\sa.uevx\AppData\Roaming\Mozilla\Firefox\Profiles\def\saved-telemetry-pings\19129a8e-518b-4365-96c8-7a82004b4389"]]
How can I resolve this issue, some software not sync from time to time, and I think it is the same reason.