Error loggin character

[MooMage]

I am trying to set up my server.
When I try to loggin the character it keeps in loading window, but in the server informations shows the following message:
"Lua Script Error: [CreatureScript Interface]
data/creaturescripts/scripts/others/offlinetraining.lua:onLogin
data/creaturescripts/scripts/others/offlinetraining.lua:4: attempt to call method "getOfflineTrainingSkill' (a nil value)
stack traceback:
[C]: in function 'getOfflineTrainingSkill'
data/creaturescripts/scripts/others/offlinetraining.lua:4: in function <data/creaturescripts/scripts/others/offlinetraining.lua:1>

has logged out.

Is there something possible to do?
I am running forgottenserver 1.1
Map: orts/server
Client: 10.77 ( I am not able to find a client 10.98, that's why I am trying server 1.1 because I couldn't set up version)

P.S. Found out this tutorial, but doesn't run in 10.77 :'(
https://otland.net/threads/10-77-tfs-1-2-orts-a-real-map-project.204514/

I would appreciate some help.
Thanks a lot!

Edit1: Solved somehow deleting the following archive. Offline training is not working, but all the other stufft is working fine! ;D