DWG import using /usr/local/lib64/libredwg.so fails

[skipp]

I installed and configured libredwg to be able to view DWG files in the Draft view.

Unfortunately the import of DWG files doesn't work, I get the following console error:

13:18:23 Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/tmp/.mount_FreeCAnWHoeh/usr/Mod/Draft/importDWG.py", line 106, in insert
doc = importDXF.insert(dxf, docname)
File "/tmp/.mount_FreeCAnWHoeh/usr/Mod/Draft/importDXF.py", line 2844, in insert
Import.readDXF(filename)
<class 'RuntimeError'>: File doesn't exist


How can I fix this for FreeCAD 0.20 on Linux?