Greetings Exile,
Thank you for your report. Can you please share your saved file with us?
You can find it by following:
Steam\steamapps\common\Conan Exiles\ConanSandbox\Saved
It should be the “game” file for Exiled Lands or “dlc_siptah” for Isle of Siptah.
Also, please share the location of where the ritual took place and failed.
Feel free to reach out in private via direct message if you prefer.
Thank you in advance.