### Steps to reproduce

1. Log in as a user who can edit meetings

2. Go to the Meetings module

3. Edit an existing meeting series that is set up to end after a specific date and change it to any number of occurrences


### What is the buggy behavior?

* User sees a 500 error

* User can't access meeting series anymore


### What is the expected behavior?

1. No error

2. User has access to the meeting series


### Begin of the insertionNote

while poking around i noticed that:

[https://qa.openproject-edge.com/recurring\_meetings/31?direction=past](https://qa.openproject-edge.com/recurring_meetings/31?direction=past) all good
[https://qa.openproject-edge.com/recurring\_meetings/31](https://qa.openproject-edge.com/recurring_meetings/31) 500

###
End of the insertion Screenshots and other files

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/310162/content">

### Environment information

**OpenProject version**

Core build

[fe73c08123ffb0052b48e6d4048f06e232af59ae](https://github.com/opf/openproject/commits/fe73c08123ffb0052b48e6d4048f06e232af59ae)

Product version

[8950dfe92bf34bd6dfcab51a36e211e8a7541c5a](https://github.com/opf/saas-openproject/commits/8950dfe92bf34bd6dfcab51a36e211e8a7541c5a)

Core version

OpenProject 15.3.0

**Browser**

* [ ] Chrome
* [x] Firefox 134.0.2
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows 11Pro
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)

**Language**

<br>