problems with the site when trying to update the style

[JAKill02]

• Browser: Supermium 126.0.6478.254 (x64) (chromiun 126)

• Screenshot:
  

• Additional context: I tried to update my style today and when I clicked the Save button, I got this (screenshot)

and this is not only when trying to update the style, but even when trying to make at least some changes to the description in the public fields intended for this (which have nothing to do with the style code itself)