[GRASS-user] Error on opening workspace

[Frank David]

Hello,

Grass 7.4 (and 7.5) failed to open a workspace (with many layers and 
folders). The waiting box stay open and the workspace is not fully loaded.
If I try to save the current workspace, I got the following message :

"Échec d'écriture des paramètres de l'espace de travail courant.

Raison: 'NoneType' object has no attribute 'GetCmd'

Traceback (most recent call last):
   File "/usr/local/grass-7.5.svn/gui/wxpython/lmgr/frame.py", line 
1656, in SaveToWorkspaceFile
     WriteWorkspaceFile(lmgr=self, file=tmpfile)
   File "/usr/local/grass-7.5.svn/gui/wxpython/core/workspace.py", line 
900, in __init__
     self.__writeLayer(mapTree, item)
   File "/usr/local/grass-7.5.svn/gui/wxpython/core/workspace.py", line 
959, in __writeLayer
     item, key='maplayer').GetCmd(
AttributeError: 'NoneType' object has no attribute 'GetCmd'"

I run Grass on Debian9

Regards