This bug was fixed in the package libprelude - 5.1.1-6
---
libprelude (5.1.1-6) unstable; urgency=medium
* d/libpreludecpp12.symbols
- Update symbols file for gcc 10 (Closes: #955194, #957467)
* d/control
- Add Breaks and Replaces for libprelude2v5 (Closes LP: #1767534)
I believe prelude-utils should conflict with or break libprelude2v5.
$ apt-cache show prelude-utils
Package: prelude-utils
Architecture: amd64
Version: 4.1.0-4
Priority: optional
Section: universe/utils
Source: libprelude
Origin: Ubuntu
Maintainer: Ubuntu Developers
Actually, after reading the summary a bit more closely, I think the
following two lines fixed the problem:
sudo apt purge libprelude2v5
sudo apt install prelude-utils
Sorry if this is not a very helpful bug report; it's just that making a
bug report was suggested after the crash report came up,
