The gist of the Getting Started guide for Arcade is that users need to 1) pick your arcade emulator and then 2) you find the exact romsets designed for that emulator version

Your emulator is mame2003 and it will only work with a MAME 0.78 collection. If you have a MAME 0.78 romset collection you will not get CRC errors and the games will, generally, play.

The MAME 0.78 romset collection is very easy to find on the internet. No Dark Web required, just a search engine :)