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

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

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

Process completed with exit code 1.

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

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

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

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

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

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

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

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

The field 'Butil13NavigatorPage.isWebDriver' is never used