### Steps to reproduce

Begin of the insertionDetected through AppSignalEnd of the insertion Begin of the deletion unknown (AppSignal)End of the deletion

Begin of the insertion1. Ensure you can enter start and end time when logging time

1. Administration / Time and Costs / Defaults, check "Allow start and finish times"

2. From my time tracking, in list view, open log time modal by creating a new entry

3. Fill the start time. **Do not fill "End time" or "hours" fields.**

4. Pick any work package


End of the insertion ### What is the buggy behavior?

Begin of the insertionInternal Server error

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/725239/content">End of the insertion Begin of the deletion uncaught exceptionEnd of the deletion

### What is the expected behavior?

No application error (HTTP 500)

###

### **Logs**

* AppSignal links:

* [https://appsignal.com/openproject-gmbh/sites/673c529383eb67b55471dda2/exceptions/incidents/1038](https://appsignal.com/openproject-gmbh/sites/673c529383eb67b55471dda2/exceptions/incidents/1038)

* [https://appsignal.com/openproject-gmbh/sites/673c529383eb67b55471dda2/exceptions/incidents/1039](https://appsignal.com/openproject-gmbh/sites/673c529383eb67b55471dda2/exceptions/incidents/1039)


#### Backtrace 1

```text
undefined method 'hours' for nil

modules/costs/app/models/time_entry.rb:171 TimeEntry#end_timestamp
modules/costs/app/components/time_entries/days_and_hours_form.rb:90 TimeEntries::DaysAndHoursForm#end_time_in_local_time
modules/costs/app/components/time_entries/days_and_hours_form.rb:63 block (2 levels) in <class:DaysAndHoursForm>
modules/costs/app/components/time_entries/days_and_hours_form.rb:47 block in <class:DaysAndHoursForm>
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:36 block (4 levels) in TimeEntries::TimeEntryFormComponent#call
app/components/op_primer/component_helpers.rb:32 OpPrimer::ComponentHelpers#flex_layout
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:32 block (2 levels) in TimeEntries::TimeEntryFormComponent#call
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:31 block in TimeEntries::TimeEntryFormComponent#call
app/components/concerns/op_turbo/streamable.rb:109 TimeEntries::TimeEntryFormComponent#component_wrapper
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:30 TimeEntries::TimeEntryFormComponent#call
app/components/concerns/op_turbo/streamable.rb:54 TimeEntries::TimeEntryFormComponent#render_as_turbo_stream
app/controllers/concerns/op_turbo/component_stream.rb:59 OpTurbo::ComponentStream#modify_via_turbo_stream
app/controllers/concerns/op_turbo/component_stream.rb:50 OpTurbo::ComponentStream#replace_via_turbo_stream
modules/costs/app/controllers/time_entries_controller.rb:78 TimeEntriesController#refresh_form
```

#### Backtrace 2

```text
undefined method 'hours' for nil

modules/costs/app/models/time_entry.rb:171 TimeEntry#end_timestamp
modules/costs/app/components/time_entries/days_and_hours_form.rb:90 TimeEntries::DaysAndHoursForm#end_time_in_local_time
modules/costs/app/components/time_entries/days_and_hours_form.rb:63 block (2 levels) in <class:DaysAndHoursForm>
modules/costs/app/components/time_entries/days_and_hours_form.rb:47 block in <class:DaysAndHoursForm>
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:36 block (4 levels) in TimeEntries::TimeEntryFormComponent#call
app/components/op_primer/component_helpers.rb:32 OpPrimer::ComponentHelpers#flex_layout
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:32 block (2 levels) in TimeEntries::TimeEntryFormComponent#call
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:31 block in TimeEntries::TimeEntryFormComponent#call
app/components/concerns/op_turbo/streamable.rb:105 TimeEntries::TimeEntryFormComponent#component_wrapper
modules/costs/app/components/time_entries/time_entry_form_component.html.erb:30 TimeEntries::TimeEntryFormComponent#call
app/components/concerns/op_turbo/streamable.rb:52 TimeEntries::TimeEntryFormComponent#render_as_turbo_stream
app/controllers/concerns/op_turbo/component_stream.rb:59 OpTurbo::ComponentStream#modify_via_turbo_stream
app/controllers/concerns/op_turbo/component_stream.rb:46 OpTurbo::ComponentStream#update_via_turbo_stream
modules/costs/app/controllers/time_entries_controller.rb:96 TimeEntriesController#create
```