Cannot open dwg 2007 files

Cannot open dwg 2007 files

Hatch failed due to a gap=0.150901 between (-0.0250064, 0.0250064) and (0.117366, -0.0250064)
Hatch failed due to a gap=0.150895 between (0.0249936, 0.0250064) and (-0.0249936, -0.117368)
Hatch failed due to a gap=0.0929228 between (0.109802, -0.192533) and (0.109802, -0.0996099)
Hatch failed due to a gap=0.0929228 between (0.109802, -0.192533) and (0.109802, -0.0996099)
Hatch failed due to a gap=6.2096e-07 between (1933.36, 864.441) and (1933.36, 864.441)
Hatch failed due to a gap=6.20851e-08 between (1940.5, 917.408) and (1940.5, 917.408)
Hatch failed due to a gap=6.20851e-08 between (1933.29, 987.465) and (1933.29, 987.465)
Opened dwg file version dwg version 2007.
error reading blocks in dwg file
Cannot open the file
/home/claude/...../Plans/2404 PlansTous Niveaux.dwg
Please check its existence and permissions.

dwg support in LibreCAD is to be considered as experimental only. Not all features are supported. If you have problems use an external tool to convert to dxf 2007, like the Teigha file converter.
The hatching feature in LibreCAD is very unforgiving if the hatches outline is not 100% closed, and imported hatches often fail.