[SOGo] Update from SOGo 2.3.4 to 2.3.7a Calendar no new event possible/can not send emails

[Daniel Müller]

Dear all,
 
I gave SOgo 2.3.7a a try and updated my SOGo 2.3.4 with yum update sogo succesfully. Everything is working but the calendar add new  event and send emails are not working any more.
The reason is I can not save the event any more !?
Do I have to cahnge something in the config file?
 
Greetings
Daniel