Problems importing contacts

For a while now I’m trying importing contacts via csv import.

I map all the fields into mautic and everytime i get the following error:

Code:
(#327) A new entity was found through the relationship 'MauticLeadBundleEntityListLead#lead' that was not configured to cascade persist operations for entity: Proxies__CG__MauticLeadBundleEntityLead with ID #21308. To solve this issue: Either explicitly call EntityManager#persist() on this unknown entity or configure cascade persist this association in the mapping for example @ManyToOne(..,cascade={"persist"}).

It's not selfhosted version, but paid Mautic Cloud. Anyone knows what's the problem?

For a while now I’m trying importing contacts via csv import.
I map all the fields into mautic and everytime i get the following error:

(#327) A new entity was found through the relationship 'MauticLeadBundleEntityListLead#lead' that was not configured to cascade persist operations for entity: Proxies__CG__MauticLeadBundleEntityLead with ID #21308. To solve this issue: Either explicitly call EntityManager#persist() on this unknown entity or configure cascade persist this association in the mapping for example @ManyToOne(..,cascade={"persist"}).

It’s not selfhosted version, but paid Mautic Cloud. Anyone knows what’s the problem?

Paid version have a Help button use it.

Same issue on the self-hosted version if anyone has any solutions.