Unable to import vcf

I am trying to import a vcf into my contacts on my nextcloud server. The error is, it just says “55 errors”.

Are those contacts 2.1 vcards?

Please be more precise and provide DETAILED information about your environment, the used software and app versions and a step-by-step description from where you’ve taken the data, and which VCARD version it contains, etc., etc.

For the 2.1 vcards, I found a workaround with some external script: Import vcard 2.1 to address book