Error in keycloak during join

Hello, i’m trying migrate to keycloack,following this How-to it install ok, but fail on join, the error is this…

File “/usr/sbin/univention-keycloak”, line 3100, in
sys.exit(main())
File “/usr/sbin/univention-keycloak”, line 3096, in main
return opt.func(opt) or 0
File “/usr/sbin/univention-keycloak”, line 2768, in init_keycloak_ucs
locales_format = [locale[:locale.index("")] for locale in locales]
File “/usr/sbin/univention-keycloak”, line 2768, in
locales_format = [locale[:locale.index("
")] for locale in locales]
ValueError: substring not found
/usr/lib/univention-install/50keycloak.inst: FATAL:
EXITCODE=2
9ddc672d-a763-4c46-a014-f9f1ef76026f

Any help?

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