Double timezone specification error

Problem/Motivation

When clicking on most calendar service buttons, a white error page appears. The following error gets logged:

message: 'DateMalformedStringException: Failed to parse time string (@2024-11-25 11:00:00) at position 8 (-): Double timezone specification in DateTime->__construct() (line 439 of [Drupal path]/web/modules/contrib/event_to_calendar/src/Controller/EventToCalendarController.php).'
severity: Error

Steps to reproduce

1. Configured module to use start and end fields of the Date field type.
2. Add "Event to calendar" block to page's layout builder
3. Click on most of the calendar services buttons
4. Observe white error page
5. Check error logs using Drush watchdog

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes