Setup_Demo.sh Fixed

Author: Patil2099

demos/demo_multiple_classes/setup_demo.sh

@@ -25,6 +25,7 @@ setup_demo () {
     make_user student1
 
     # Install global nbgrader config file.
+    mkdir -p /etc/jupyter/
     cp global_nbgrader_config.py /etc/jupyter/nbgrader_config.py
 
     local courses=(course101 course123)