Bug: Page constantly loading and tavern quest not working

[aure1is]

What happened 🆘

I am trying to do the tavern quest with my lvl6 bard. I can enter the quest page, but then cannot proceed and start singing. Nothing happens when clicking on the button. I retried with open dev console and noticed that the page loads without errors but after having clicked the button multiple error popup (see screenshot).
https://i.imgur.com/tcodILl.png

To Reproduce 🔂

Steps to reproduce the behavior:
Go to https://rarityextended.com/adventures/openmic#action and try to start the quest by click the "stage and sing" button.

More 🔎

• Browser : Firefox latest, Braver latest
• FTM Provider : FPM tools, but tried multiple providers
• Adventurer ID : 1352845
• Rarity Skins: Tried with option on and off