Cron-job for Campaigns buggy (5.1.0)

Your software
My Mautic version is: 5.1.0 (same issue with 5.0.4)
My PHP version is: 8.0.30
My Database type and version is: 10.3.39-MariaDB

Your problem
My problem is:
My campaigns don’t get triggered as they should (despite correct cron-job setup). Even triggering them manually via Terminal with “php bin/console mautic:campaigns:update” and “php bin/console mautic:campaigns:trigger” doesn’t work correctly. The campaigns seem just to trigger (more or less) correctly if I ran the cron-jobs with for example " --campaign-id=12".

These errors are showing in the log:

In the Mautic admin-area the log is empty.

Here is a part of “var/logs/prod-2024-08-22.php” (every few minutes new such entries are added):

[2024-08-22T09:40:03.232683+00:00] app.ERROR: CAMPAIGN: Multiple non-persisted new entities were found through the given association graph: * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#campaign' that was not configured to cascade persist operations for entity: Mautic\CampaignBundle\Entity\Campaign with ID #18. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#campaign' that was not configured to cascade persist operations for entity: Mautic\CampaignBundle\Entity\Campaign with ID #15. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #542. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#campaign' that was not configured to cascade persist operations for entity: Mautic\CampaignBundle\Entity\Campaign with ID #21. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #543. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #544. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #546. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #547. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #548. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #550. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #551. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #552. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #553. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #554. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #555. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #556. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #557. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #558. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #559. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #560. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #561. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #562. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\LeadEventLog#lead' that was not configured to cascade persist operations for entity: Proxies\__CG__\Mautic\LeadBundle\Entity\Lead with ID #563. 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"}). * A new entity was found through the relationship 'Mautic\CampaignBundle\Entity\Lead#campaign' that was not configured to cascade persist operations for entity: Mautic\CampaignBundle\Entity\Campaign with ID #12. 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"}). [] {"hostname":"server.verfuehren-befriedigen-tipps.de","pid":13372}

Steps I have tried to fix the problem:

Despite not understanding the error-code at all, I tried all kinds of AI (chatGTP, etc.) to solve this errors, but with no luck. They say things I don’t understand either, like:

“The error message you’re encountering indicates that Mautic is having trouble persisting certain entities within your campaigns. Specifically, it’s struggling to handle relationships between entities like LeadEventLog, Campaign, and Lead due to missing cascade={"persist"} configurations in the Doctrine ORM mappings.”