The identifier "index" isn't declared in the current scope.

[anonymalek]

After importing my database.cdb, I opened it to see inside if everything was doing ok. Then, I saw this error over here.

I searched the code and I discovered that the index variable indeed wasn't defined. I gave the source code a look and I saw this:

Maybe keys.size() is returning 0 but there is keys... Someone knows how to solve it?

[thejustinwalsh]

If you could attach a slimmed down sample of your database file it would be helpful in determining what went awry here.

[anonymalek]

database.cdb.zip

[thejustinwalsh]

Looks like the same issue as here: https://github.com/thejustinwalsh/castledb-godot/issues/6

You need 1 Unique Identifier column per sheet.

[thejustinwalsh]

I'm also unsure if my plugin will parse your snake_case column names as you would expect. I think I just capitalize the first character and assume you would be using camelCase column names. I hacked this together for a game I was porting so your mileage may vary.