SQLite import halt after 200 records.... why

Hello. I’m creating a Quiz app and I’m importing data from a json inside a sqlite DB.
I will use the ngCordova plugin for the app, now I’m using the browser api to read and write the DB.

But I have a problem: after some imports the system stop and the table disappear.

I cannot find a solution, looks like a memory issue.

Any idea?

Here is my code: