It has been a long while since I last built one, and I never used WARP. But I think I can give you a few ideas...
All those errors are related to bad lua files. Maybe the way you generated them is giving bad results, maybe you have an issue loading them. I can't guide on the translation project as I only used it once or twice to mixed results, so I usually just build my client manually...
Here are some tips to try to debug these issues:
1. "attempt to call a nil value" means the function does not exists. Check if you have those LUAs and they have the required function
- queryRegionInfo: data\lua files\seekparty\party_booking.lub or data\lua files\seekparty\party_booking_function.lub (I am not sure which one is loaded when, but I can see both has this function)
- ResetTheHotKey: data\lua files\hotkey.lub
If you don't have these functions in those files, this is likely the cause. If you do, maybe you have an issue loading your GRF.
You can try tweaking how you generate your client from translation project and see if you get a better lua as output... just throwing ideas here as I don't know how to use it.
2. "attempt to index global 'JobSkillTab' (a nil value)" as far as I remember, means some code is doing JobSkillTAb[IDX] while JobSkillTab is not initialized
Check if data/luafiles514/lua files/skillinfoz/skillinfo_f.lub is initializing a table: JobSkillTab = {} -- I think this is the root cause.
If it is not, your lua files are bad for this client
Hope this helps