My array file keeps messing up. How do I fix it?

Hi, I recently started experiencing this issue with my Array files. When I create a new array file, it by defaults shows up as a table where you can adjust width, height, dept. After populating all the data needed, for unknown reason reopening the file switches to showing just as json structure rather than showing me the table.

https://snipboard.io/rPlp3q.jpg

I have over 500 data entries and I was trying to add more when this happened.

How do I fix this?

Thanks

Never mind, figured it out. Downloaded the json file and started copying some part of the data into the new file that works, uploaded it and checked that it displays as table. Did this till I got to the part that it started failing.

Narrowed it down to an entry that appeared like this:

"Abbreviation",

null,

"Reflection",

Looks like Construct 3 didn't like the data I entered in that cell hence doing this.