We get this error after the update to the latest 8 version. The error appears in the email entity, when someone tried to add the email to the queue. I also encoutered this error on the test machine that has the same version. What I tried:
- Deactivated all Plugins for the Entities queueitem, email
- Disabled the Form JS logic
It seems like the error only effects the webinterface and the E-mail got still added to the queue. Has anybody else encountered this problem? I'm close to report this as bug to MS. The error appears in Chrome and IE.

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