Error on manage event session page

[shreyanshdwivedi]

Describe the bug

Error Unhandled promise rejection Error: "Assertion Failed: Cannot call get with 'count' on an undefined object." appears on loading of session page

To Reproduce
Steps to reproduce the behaviour:

1. Go to Manage Events > Event
2. Click on Sessions
3. See error

Expected behaviour

Sessions should load properly

Additional context

On it

[shreyanshdwivedi]

Fixed in fossasia/open-event-server#6360