OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 2023.114.26244 +5346 (Git)
Build type: Release
Branch: LinkDaily
Hash: 734bfcf
Python version: 3.10.8
Qt version: 5.15.6
Coin version: 4.0.1
OCC version: 7.6.3
Locale: English/United Kingdom (en_GB)

This works in vanilla FC 0.20.1

I make a Ruled surface between two sketches, then a second ruled surface between two of the edges works and the the final one which would make an fully enclosed space fails with general error.

Example file with error.
first.zip