<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false">I am learning how to use WRF model. When I run <b><i><font color="#70aced">$ ncl util/plotgrids_new.ncl</font></i></b> I get this error. </div><div dir="ltr" data-setdir="false"><span><br></span></div><div dir="ltr" data-setdir="false"><div><div><i>Copyright (C) 1995-2019 - All Rights Reserved</i></div><div><i> University Corporation for Atmospheric Research</i></div><div><i> NCAR Command Language Version 6.6.2</i></div><div><i> The use of this software is governed by a License Agreement.</i></div><div><i> See http://www.ncl.ucar.edu/ for more details.</i></div><div><i>fatal:Could not open ($NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl)</i></div><div><i>fatal:error at line 7 in file util/plotgrids_new.ncl.</i></div></div><div><i><br></i></div><div dir="ltr" data-setdir="false"><i>Any one to help me to fix this issue.</i></div></div></div></body></html>