Steps:

1. Navigate to http://localhost:8080/sputnik.ws?p=snippets (non existent)

2. Add 'mockup' as content.

3. Save the edit.

4. Try to edit again.

5. This time hit the 'Cancel' button.

   Error: Sputnik ran but failed due to an unexpected error.

   Error details:

   `...ocks//sputnik/9.03.16-0/lua/sputnik\actions\wiki.lua:164: attempt to call field '?' (a nil value) stack traceback:

   ...ocks//sputnik/9.03.16-0/lua/sputnik\actions\wiki.lua:164: in function 'action_function'
   ...arocks/rocks//sputnik/9.03.16-0/lua/sputnik/init.lua:786: in function <...arocks/rocks//sputnik/9.03.16-0/lua/sputnik/init.lua:727>`