Lots of errors when running a build on Mac

[oculos]

Hi,

I am building Thunderbird myself. It works great for the most part, but I got lots of errors when starting a build. These are the errors:

2024-05-11 15:24:36.233 thunderbird[17132:11986997] Rethrowing (from nts_ValueForProperty:) NSInternalInconsistencyException: Unhandled error (NSCocoaErrorDomain, 134092) occurred during faulting and was thrown: Error Domain=NSCocoaErrorDomain Code=134092 "(null)"
CoreData: error: Unhandled error occurred during faulting: Error Domain=NSCocoaErrorDomain Code=134092 "(null)" ({
})

hundres of those. It gets better when the application becomes responsible, but before that, lots of these.
What could be causing this?