Samba script error

After installing and configuring the ESXI latest image i’m getting the following error when trying to run the only pending SAMBA script to be able to join the Domain. Any tips on where the issue could be?
I understand it could be a credential issue but im not sure which one. I’m running my AD on Server2008R2. Thanks

RUNNING 26univention-samba.inst
2020-04-15 09:17:46.234841056-04:00 (in joinscript_init)
INFO: Cannot run joinscript in memberserver mode without join credentials. Please run:
univention-run-join-scripts --ask-pass
to complete the domain join.
univention-join-hooks: looking for hook type “join/post-joinscripts” on SRVRCRM.horizons.local
Found hooks:

Wed Apr 15 09:17:47 EDT 2020
univention-run-join-scripts finished