'HttpRequestMessage' does not contain a definition for 'Options' and no accessible extension method 'Options' accepting a first argument of type 'HttpRequestMessage' could be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpRequestOptionsKey<>' could not be found (are you missing a using directive or an assembly reference?)

'HttpRequestMessage' does not contain a definition for 'Options' and no accessible extension method 'Options' accepting a first argument of type 'HttpRequestMessage' could be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpRequestOptionsKey<>' could not be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.

'BaseResultChunk.ExtractCell(int, int)' is obsolete: 'ExtractCell with rowIndex is deprecated'