I am adding the following info:

If I run the following on the Docker image where I got the error I get:

```
import sys
import locale

print(sys.getdefaultencoding())
print(locale.getpreferredencoding())
```

utf-8
ANSI_X3.4-1968

While if I run it on my machine I get:

utf-8
UTF-8

I don't know how to force the usage of the later locally to reproduce.

Settings LC_ALL=C and LANG=C didn't do the trick