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

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

Process completed with exit code 1.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.