Non-nullable field '_timer' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable property 'Summary' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Nullability of reference types in type of parameter 'state' of 'void TrafficGenerator.DoWork(object state)' doesn't match the target delegate 'TimerCallback' (possibly because of nullability attributes).

Number of parameters supplied in the logging message template do not match the number of named placeholders (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2017)

Non-nullable field '_timer' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable property 'Summary' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Nullability of reference types in type of parameter 'state' of 'void TrafficGenerator.DoWork(object state)' doesn't match the target delegate 'TimerCallback' (possibly because of nullability attributes).