As of this morning Opera mobile has been failing to load any sites for me.
In all cases, it is returning "This site can't be reached"
It is not my internet connection, as Chrome is behaving correctly for the same sites, and I have tried several different websites (including Google)

I cannot see any pending updates to Opera, nor did I download one recently.
Disabling and enabling Adblock, VPN and Data Saving has no effect.

Version of Android: 11
Phone model and manufacturer: Samsung S10+
Version of Opera for Android: 63.3.3216.58675