[BUG] An error is occured while trying to split task

[Manjita Pandey]

Describe the bug
Sometimes, On splitting larger tasks to smaller one. User encounter an error of crashing of page

To Reproduce
Steps to reproduce the behavior:

1. Go to 'task page'
2. Click on 'map selected task'
3. click on split tasks
4. See error

Expected behavior
The task should be splitted without any error message.

Screenshots

Additional context
Issue raised on slack by mmahmud : https://hotosm.slack.com/archives/C319P09PB/p1714913717284369