It looks like you might have two things going on here, one which you can control and one which you cannot.
The one which you can control:
Means that something you're trying to deploy won't compile in its current state. It'll probably take a little digging to figure out which class(es) are not able to be compiled in the target org.
The one you cannot control:
__MISSING LABEL__ PropertyFile - val [IDENTIFIER] not found in section ContextExceptions Stack trace: null
This looks to be a message informing you that the label for that identifier couldn't be found. In your specific case that message usually says:
Dependent class is invalid and needs recompilation
There's a couple answers here on the site with useful information in troubleshooting which one of your classes won't compile, such as this one:
How to troubleshoot 'Dependent class is invalid and needs > recompilation' exception?