### Steps to reproduce

Begin of the deletion _Please write down the steps to reproduce. Try to write down all necessary preconditions (what permissions do you have, are other users involved?). Example:_

End of the deletion 1. User Begin of the insertionis memberEnd of the insertion Begin of the deletion logsEnd of the deletion in Begin of the insertiona project where time and cost logging is enabledEnd of the insertion
2. Begin of the insertionIn that project the user is having a role with the permissions to _View own spent time_ and to _Log own time._ The permission to _Edit own time logs_ is disabled. And that seems to be relevant.
3. User opensEnd of the insertion Begin of the deletion OpensEnd of the deletion "my page"
Begin of the insertion4.End of the insertion Begin of the deletion 3.End of the deletion Begin of the insertionAddEnd of the insertion Begin of the deletion Tries to use theEnd of the deletion "My Spent time" widget Begin of the insertion
5.End of the insertion Begin of the deletion
1.End of the deletion Begin of the insertionClick arrow left or arrow right to paginate throughEnd of the insertion Begin of the deletion See previous / next weeks date
2. Record spent time

Not all users are affected butEnd of the deletion the Begin of the insertioncalendar (This is the moment where a JS error occours)End of the insertion Begin of the deletion ones that do, are always affected!End of the deletion

### What is the buggy behavior?

Begin of the deletion _Please describe the bug with as most details as possible. Example:_

End of the deletion 1. Begin of the insertionInEnd of the insertion Begin of the deletion As soon any spent time dat is shown inEnd of the deletion the Begin of the insertionbrowser console an exception is thrownEnd of the insertion Begin of the deletion widget, the error occursEnd of the deletion
2. Begin of the insertionWidget becomes unusable untilEnd of the insertion Begin of the deletion Navigation to previous /End of the deletion next Begin of the deletion week or today is not possible, most reload theEnd of the deletion page Begin of the insertionreloadEnd of the insertion

The bug was not present in version 11, only after the recent update to 12.3.2

### What is the expected behavior?

Begin of the deletion _Describe how the application should behave like. Example:_

End of the deletion 1. We can freely navigate between the weeks

### Begin of the deletion Important note

_Please note that unless you are a contributor to OpenProject, you can no longer edit this bug report after saving. You can still add new comments, but no longer add any new images or other attachments. Please make sure that all necessary information and attachments are added, and the following attributes are set:_

###End of the deletion **Logs**

Begin of the insertionAttached,End of the insertion Begin of the deletion _Are there errors in the browser console? (_[_Click here for information on how to open your browser's console_](https://webmasters.stackexchange.com/a/77337)_) For a local installation: Are thereEnd of the deletion relevant Begin of the deletion logs output by_ `_openproject logs_` _(packaged installation) (_[_click here for details_](https://docs.openproject.org/installation-and-operations/operation/monitoring/#show-logs)_) or in a log/production.log or /var/log/openproject/ ? Please attach error output in these log files if applicable_

_Attached, relevantEnd of the deletion user-id: Begin of the insertion29End of the insertion Begin of the deletion 29_End of the deletion

### Screenshots and other files

Expected behavior : My Spent Time OK.gif

Bogus behavior: My Spent Time NOK.gif

### Environment information

Begin of the deletion _Please check and fill out the following details to help us identify in what versions and distributions of OpenProject the error occurs_

End of the deletion **OpenProject installation type**

* [ ] Hosted cloud edition
* [x] Packaged installation
* Ubuntu 18
* [ ] Docker All-in-one container
* [ ] Docker-compose installation
* [ ] Other (please specify)

**OpenProject version** Begin of the deletion

_If you're not running on the cloud edition, please specify the version of OpenProject you're running. Example: v12.1.5_End of the deletion

Core version OpenProject 12.3.2

PostgreSQL version 13.8

**Browser**

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

**Language**

English, Hungarian