Error: Ace2Editor.init() error event while waiting for load event

[stemy2]

Describe the bug
Can't open pads.

To Reproduce
Steps to reproduce the behavior:

1. Open a pad.

Expected behavior
The pad is opened.
Screenshots

Server (please complete the following information):

• Etherpad version: unknown
• OS: unknown
• Node.js version (node --version): unknown
• npm version (npm --version): unknown
• Is the server free of plugins: unknown
  I do not own the server, so i have no clue about its characteristics.

Desktop (please complete the following information):

• OS: Kubuntu
• Browser: Mullvad Browser 15.0.1

[sbrivio-rh]

Do you have Bitwarden installed? In that case, see #6802 and bitwarden/clients#17598.