No, the error reads "'buttinIsPressed' was not declared". That means "I don't recognize this name. " If you compare the spelling with the declaration:
bool buttonIsPressed =
You will see that I typed "buttinIsPressed" one place where I should have typed "buttonIsPressed" to match the declaration. In this case, you can tell the "buttonIsPressed" is the right spelling because it is used three times where "buttinIsPressed" is used only once.