Faulty vcard breaks address book sync

[mpern]

One entry in my address book collection can't be parsed, this in turn breaks the sync of the whole address book.

[2021-03-07 10:08:03 +0100] [24447/Thread-17] [ERROR] An exception occurred during PROPFIND request on '/<user>/foo/': Failed to parse item 'foo.vcf' in '<user>/foo'

Expected

Address book can be synced / accessed, the faulty item is filtered out

Actual

Address book can't be synced at all

[tasn]

Annoying indeed, I thought we fixed it! Though tbh, I'm not sure what's the correct way of dealing with it, because etesync-dav is built on Radicale, and that's the one actually doing the parsing.

[mpern]

Another parsing error:

[2021-03-07 10:44:11 +0100] [30235/Thread-29] [ERROR] An exception occurred during REPORT request on '/<user>/<address book>': Failed to serialize item '<entry>.vcf' from '<user>/<address book>': 'VCARD components must contain at least 1 FN'

I fixed it by first constructing the etesync web url for the faulty contact (to find out which entry it is):

https://pim.etesync.com/pim/contacts/<address book>|<entry>/log

And then changing (or deleting) the contact accordingly on my Android device.