xFunc.Maths/Analyzers2/ChainRuleBuilder.cs(8,23): Error CS8618: Non-nullable field 'initialRule' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

xFunc.Maths/Analyzers2/ChainRuleBuilder.cs(9,23): Error CS8618: Non-nullable field 'currentRule' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

xFunc.Maths/Analyzers2/ChainRuleBuilder.cs(1,1): Error SA1633: The file header is missing or not located at the top of the file. (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1633.md)

xFunc.Maths/Analyzers2/ExecutionStep.cs(1,1): Error SA1633: The file header is missing or not located at the top of the file. (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1633.md)