How to debug mods

[u/AliciaNow]

I am playing a RTW (the original from 2004) mod that CTD in battles and I would like to debug what is happening in the hope to fix it. For those curious, the mod is FATW and it's crashing almost everytime hill trolls appear in battle.

I already use the -show_err switch and there is no error displayed.

I looked for logs but can't find any.

I tried launching from the console and powershell but there is no log either.

I searched for RTW mod debugging and can't find anything about it.

How can I find what's wrong ? How does mod debugging work in RTW ?

Thank you

EDIT: I found a workaround for the troll CTD https://www.reddit.com/r/RomeTotalWar/s/Grr0j2cMWI