I'm getting an unhandled TypeError from the set span method of the elasticapm.context.contextvars.ContextVar here

The spans variable is of type None and is throwing an unhandled exception.

I have been unable to find the root causes on this as it is happening in production sporadically without a clear way to reproduce it.

We are running this within a django/celery app with the following version numbers

django: 3.2.24
celery: 5.3.6
apm-agent-python: 6.20.0

Could we possibly add some type guards within this method or exception handling for this case?

Thanks,
Jamie