Firebase Performance crashes on first URLSessionDataTask

Question

I added Firebase Performance to iOS project however it crashes with the first creation of URLSessionDataTask.

I am using custom operation class to handle server requests. But I do not see how it could be relevant.

Crash happens here:

sessionDataTask = urlSession?.dataTask(with: request as URLRequest,
                                       completionHandler: { [weak self] (data: Data?, response: URLResponse?, error: Error?) in
                                       self?.didFinishDataTaskWith(data: data, response: response, error: error)
})

And I cannot see anything else that could help to track the issue:

Screenshot

Closest thing I found on the internet is following question but I am not using Crittercism or anything similar:

Firebase Performance crashes the app on the first call to NSURLSession