Algorithm r.blend.combine - Blends color components of two raster maps by a given ratio and export into a unique raster. starting...
g.proj -c proj4="+proj=utm +zone=32 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs"
r.in.gdal input=/home/me/some path/input.vrt output=tmp14725505976613 --overwrite -o
r.in.gdal input=/home/me/some path/input.vrt output=tmp14725505976614 --overwrite -o
g.region -a n=6004660.43002 s=5916071.27811 e=589319.585921 w=454181.083265 res=0.999900132121
r.blend -c first=tmp14725505976614 second=tmp14725505976614 percent="50" output=outputd55279a08d2f435592089285e26c4b3b --overwrite
r.out.gdal -t createopt="TFW=YES,COMPRESS=LZW" input=outputd55279a08d2f435592089285e26c4b3b output="/tmp/processing734b47517cfb48078378d67b082e1d3d/2c454e5c936e4171aada5c8ba76eda04/output.tif" --overwrite
Starting GRASS GIS... 
Executing '/home/me/.qgis2//processing/grass7_batch_job.sh' ... 
Default region was updated to the new projection, but if you have multiple mapsets `g.region -d` should be run in each to update the region from the default 
Projection information updated 

Description: 
Imports raster data into a GRASS raster map using GDAL library. 

Keywords: 
raster, import 

Usage: 
r.in.gdal [-ojeflkcp] input=name output=name [band=value[,value,...]] 
[memory=value] [target=name] [title=phrase] [offset=value] 
[location=name] [table=file] [--overwrite] [--help] [--verbose] 
[--quiet] [--ui] 

Flags: 
-o Override projection (use location's projection) 
-j Perform projection check only and exit 
-e Extend region extents based on new dataset 
Also updates the default region if in the PERMANENT mapset 
-f List supported formats and exit 
-l Force Lat/Lon maps to fit into geographic coordinates (90N,S; 180E,W) 
-k Keep band numbers instead of using band color names 
-c Create the location specified by the "location" parameter and exit. Do not import the raster file. 
-p Print number of bands and exit 
--o Allow output files to overwrite existing files 
--h Print usage summary 
--v Verbose module output 
--q Quiet module output 
--ui Force launching GUI dialog 

Parameters: 
input Name of raster file to be imported 
output Name for output raster map 
band Band(s) to select (default is all bands) 
memory Maximum memory to be used (in MB) 
Cache size for raster rows 
options: 0-2047 
default: 300 
target Name of GCPs target location 
Name of location to create or to read projection from for GCPs transformation 
title Title for resultant raster map 
offset The offset will be added to the band number while output raster map name creation 
default: 0 
location Name for new location to create 
table File prefix for raster attribute tables 
The band number and ".csv" will be appended to the file prefix 

ERROR: Sorry is not a valid option 

Description: 
Imports raster data into a GRASS raster map using GDAL library. 

Keywords: 
raster, import 

Usage: 
r.in.gdal [-ojeflkcp] input=name output=name [band=value[,value,...]] 
[memory=value] [target=name] [title=phrase] [offset=value] 
[location=name] [table=file] [--overwrite] [--help] [--verbose] 
[--quiet] [--ui] 

Flags: 
-o Override projection (use location's projection) 
-j Perform projection check only and exit 
-e Extend region extents based on new dataset 
Also updates the default region if in the PERMANENT mapset 
-f List supported formats and exit 
-l Force Lat/Lon maps to fit into geographic coordinates (90N,S; 180E,W) 
-k Keep band numbers instead of using band color names 
-c Create the location specified by the "location" parameter and exit. Do not import the raster file. 
-p Print number of bands and exit 
--o Allow output files to overwrite existing files 
--h Print usage summary 
--v Verbose module output 
--q Quiet module output 
--ui Force launching GUI dialog 

Parameters: 
input Name of raster file to be imported 
output Name for output raster map 
band Band(s) to select (default is all bands) 
memory Maximum memory to be used (in MB) 
Cache size for raster rows 
options: 0-2047 
default: 300 
target Name of GCPs target location 
Name of location to create or to read projection from for GCPs transformation 
title Title for resultant raster map 
offset The offset will be added to the band number while output raster map name creation 
default: 0 
location Name for new location to create 
table File prefix for raster attribute tables 
The band number and ".csv" will be appended to the file prefix 

ERROR: Sorry is not a valid option 
Calculating the three component maps... 
Invalid map 
Invalid map 
Invalid map 
Parse error 
ERROR: parse error 
ERROR: An error occurred while running r.mapcalc 
ERROR: Raster map or group not found 
Execution of '/home/me/.qgis2//processing/grass7_batch_job.sh' finished. 
Cleaning up temporary files... 
Starting GRASS GIS... 
Executing '/home/me/.qgis2//processing/grass7_batch_job.sh' ... 
ERROR: Raster map or group not found 
Execution of '/home/me/.qgis2//processing/grass7_batch_job.sh' finished. 
Cleaning up temporary files... 
Converting outputs
Loading resulting layers

The following layers were not correctly generated.
Blended
You can check the log messages to find more information about the execution of the algorithm