two bug fixes (blue line + unsupported exceptions)

Author: Jessica Shi

javascripts/demo.js

@@ -260,6 +260,7 @@ function demo() {
             listTensorsBody += "<i class=\"mdl-icon-toggle__label ";
             listTensorsBody += "material-icons\">keyboard_arrow_down</i>";
             listTensorsBody += "</label>";
+            listTensorsBody += "<label class=\"mdl-textfield__label\"></label>";
             listTensorsBody += "<ul class=\"formats dropdown-menu\" for=\"";
             listTensorsBody += formatNameId;
             listTensorsBody += "\">";
@@ -269,7 +270,7 @@ function demo() {
               listTensorsBody += formatNameId + "_" + name + "\" >";
               listTensorsBody += name + "</a></li>";
             }
-            listTensorsBody += "</div></td>";
+            listTensorsBody += "</ul></div></td>";
 
             listTensorsBody += "<td class=\"mdl-data-table__cell--non-numeric\" ";
             listTensorsBody += "style=\"padding: 0px\">";

server/taco_server.py

@@ -48,8 +48,10 @@ def do_POST(self):
         response['error'] = 'Server is unable to process the request in a timely manner'
         logFile = "/home/ubuntu/timeout.log"
       except subprocess.CalledProcessError as e:
-        response['error'] = re.compile(':\n .*\n').search(e.output.decode()).group()[3:-1]
-        if response['error'].strip() == "":
+        search = re.compile(':\n .*\n').search(e.output.decode())
+        if search is not None: 
+          response['error'] = search.group()[3:-1]
+        else: 
           response['error'] = 'Expression is currently not supported'
         logFile = "/home/ubuntu/errors.log"
       except: