RimuruTempest

I've been getting this error when compiling and all I've touched is the itemdb as I'm implementing custom items, I tried looking in the file but nothing changed on said line and I wasn't able to find anything about in googles, has anybody experienced something like this?

Do I run that in my desktop or on the server? I use winscp to run my host

Is there a way to convert the txt file to yaml? or is there a good guide on how to add custom items in yaml, I have been trying for a few hours with no success. I am using a 20151104 client and a dedicated host if that helps. Thank you in advance.

I am getting back into private servers and I'm wondering if you can use the old item_db with a current version of rAthena