(bug) <error method of DataCollectorHook class in python-provider use a non declared variable details>

[tungntpham]

Observed behaviour

I used the sample program for python-provider without starting the relay proxy. I noticed from the log, an error is thrown in error method, saying that the details variable does not exist. From the code, I can see that it is a copy and paste of the after method which has details passed as an argument. The error method does not have this parameter as an input, so the error was thrown.
This is a syntactical error.

Expected Behavior

The problem should not throw a syntatical error.

Steps to reproduce

Run the python sample at here from the go-feature-flag doc without started a relay proxy.

The error should be able to be observed from the log.