LaTeX.org

I'm trying to work on LaTeX from home and I'm getting compiler errors that I wasn't getting in work. Here's the code generating the errors:

\begin{algorithm}[H]
%\SetLine
\SetKwData{OpenList}{openList}
\SetKwData{ClosedList}{closedList}
\SetKwData{Start}{start}
\SetKwData{End}{end}
\SetKwData ...