Since last upgrade of FC daily, I got an error message at startup : 'ascii' codec can't decode byte 0xc3 in position 6: ordinal not in range(128)
Nothing more is displayed when FC runs from console.
The only visible symptom is that Start WB is blank.
At now, I identify that problem is due to user.cfg file. As I delete it, error is gone and Start WB displayed correctly (the same as a fresh new install).
The only clue I have is that user.cfg is UTF-8 encoded, and when I run sys.getdefaultencoding() on the Python console, it replies with 'ascii'.
I found this former BT but it doesn't help me going further : https://www.freecadweb.org/tracker/view.php?id=3105
I may envisage to live with a fresh blank user.cfg, but I'd prefer to fix the issue to keep my preferences as they are.
Thanks for any help
--- FC info (I run it with EN language) ---
OS: Ubuntu 18.04.1 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15684 (Git)
Build type: Release
Branch: master
Hash: 041a550815e00f1e49e57a3793d23b52bcde4cbc
Python version: 2.7.15rc1
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: French/France (fr_FR)