Bug report #21173

grass algorithms in processing does not work (qgis 3.4.4 grass 7.6)

Added by Claas Leiner almost 2 years ago. Updated almost 2 years ago.

Status:Closed
Priority:High
Assignee:-
Category:Processing/GRASS
Affected QGIS version:3.4.4 Regression?:Yes
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:duplicate
Crashes QGIS or corrupts data:No Copied to github as #:28991

Description

The Grass algorithms in the toolbox does not work and stop with an error message.
e.g. v.buffer and v.overlay.

qgis 3.4.4 / grass 7.6 / Ubuntu 16.04.

2019-02-05T13:25:38 CRITICAL Traceback (most recent call last):
File "/usr/share/qgis/python/plugins/processing/algs/grass7/Grass7Algorithm.py", line 423, in processAlgorithm
Grass7Utils.executeGrass(self.commands, feedback, self.outputCommands)
File "/usr/share/qgis/python/plugins/processing/algs/grass7/Grass7Utils.py", line 373, in executeGrass
startupinfo=si if isWindows() else None
TypeError: init() got an unexpected keyword argument 'encoding'


Related issues

Duplicates QGIS Application - Bug report #20886: grass r.resamp.rst tool of qgis3.4 execute failed on linux Closed 2018-12-27

Associated revisions

Revision 5fca18c4
Added by Nyall Dawson almost 2 years ago

[processing][GRASS] Fix exceptions on Python < 3.6

Fixes #21173

Revision 773964bb
Added by Nyall Dawson over 1 year ago

[processing][GRASS] Fix exceptions on Python < 3.6

Fixes #21173

(cherry picked from commit 5fca18c4ae2c4df833fa0b687bd7e1d15ff39499)

Revision 31217611
Added by Nyall Dawson over 1 year ago

[processing][GRASS] Fix exceptions on Python < 3.6

Fixes #21173

(cherry picked from commit 5fca18c4ae2c4df833fa0b687bd7e1d15ff39499)

History

#1 Updated by Jürgen Fischer almost 2 years ago

  • Status changed from Open to Closed
  • Resolution set to duplicate

#2 Updated by Jürgen Fischer almost 2 years ago

  • Duplicates Bug report #20886: grass r.resamp.rst tool of qgis3.4 execute failed on linux added

#3 Updated by Luigi Pirelli almost 2 years ago

tested on master with v.overlay and v.buffer and they works correctly

#4 Updated by Marie Silvestre almost 2 years ago

I have the exact same problem.

I'm running QGIS 3.4.5 with GRASS 7.6 on Ubuntu 16.04 Xenial (I have reinstalled QGIS from the ubuntugis-ltr repository today).
I also tried with QGIS 3.4.4 with GRASS 7.2 on a Debian strech.

I have no problem running GRASS in standalone but as soon as I try to run any GRASS algo from QGIS toolbox, I get this error: init() got an unexpected keyword argument 'encoding'

I have absolutely no idea how to solve this apart from maybe moving to Ubuntu 18 / Debian 10... or Windows...

Claas Leiner, have you solved your problem?

#5 Updated by Claas Leiner almost 2 years ago

  • Status changed from Closed to Reopened

The problem persists.

My Workaroud:

Open the file

/usr/share/qgis/python/plugins/processing/algs/grass7/Grass7Utils.py

and delete every line with:

encoding="cp{}".format(Grass7Utils.getWindowsCodePage()) if isWindows() else None,

After that I can run Processing-Grass-Commands.

The problem does not seem to exist with all QGIS installation on Ubuntu. I use Ubuntu 16.04 and QGIS with unbuntugis dependencies.

Claas

#6 Updated by Nyall Dawson almost 2 years ago

  • % Done changed from 0 to 100
  • Status changed from Reopened to Closed

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