We have doubt that our user has submitted answer like:
“(space) ABC” on 3rd Jan 2019 6:23:26.
Can you please check in you data base and confirm, is there any missing data or not?
Please check below image of chat.
We got null result in JSON. please check below image.
So please check and confirm from your database user submitted only blank space (eg. (space) (space)) or blank space with answer (eg. (space) ABC)