Activities V2 API - 500 Internal Server Error

While accessing activities v2 API through API Token of a non-admin user with query params consisting of updated_since, the API throws a ‘500 Internal Server Error’. Any idea what causes this? Any way to resolve this?

I have attached a screenshot for the same.

If I remove ‘updated_since’ from query params, the API works fine, just as expected. The issue is with the ‘updated_since’ param.