how to solve \gobble error in latex , latex error and warnings

how to solve \gobble error in latex

use
\section{\protect

instead of
\section{

sample error msg

! Argument of \@gobble has an extra }.
<inserted text>
                \par
l.72 \end{document}

? Runaway argument?
! Paragraph ended before \@gobble was complete.
<to be read again>