Issue where self.tracer wasn't defined

[chiroptical]

I ran into an issue with the following code

AIforEarth-API-Development/Containers/base-py/ai4e_api_tools/ai4e_service.py

Line 139 in 18b33b3

if (self.tracer):

where self.tracer was not defined.

AIforEarth-API-Development/Containers/base-py/ai4e_api_tools/ai4e_service.py

Lines 42 to 43 in 18b33b3

	if not isinstance(self.log, AI4EAppInsights):
	self.tracer = self.log.tracer

Above L42, I guess you could just add self.tracer = None to prevent this. Would you like me to make the PR?