fixes #189, fixed an exception when obj is "undefined"

Author: Cerem Cem ASLAN

components/debug-obj/index.pug

@@ -3,5 +3,5 @@
         icon.bug
 
     modal(title="{{title}}" basedon="{{mymodal1}}")
-        .ui.segment(style="width: 800px")
-            json-edit(value="{{obj}}" style="width: 100%; height: 100em;")
+        .ui.segment(style="width: 80vw; height: calc(80vh - 80px)")
+            json-edit(value="{{obj || null}}" style="width: 100%; height: 100%;")