First of all I would like to say, that I have checked all the open threads (with almost the same title) about r.in.lidar errors and in general GRASS and it's "raster map not found" errors within QGIS 2.18.x.
The r.in.lidar in QGIS 2.18.14 and in GRASS 7.0.3 in Linux Mint and Windows 10 do the same error when running the tool:
Algorithm r.in.lidar - Creates a raster map from LAS LiDAR points using univariate statistics. starting... g.proj -c proj4="+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=500000 +y_0=-5000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs" g.region n=92000.0 s=91000.0 e=396000.0 w=395000.0 res=1 r.in.lidar input="/home/alen/Desktop/TM_395_91.laz" method=mean type=FCELL zscale="1" percent="100" resolution="1" -e -o output=output412a4072b5e749b8b5eaa46a1e1a183f --overwrite g.region raster=output412a4072b5e749b8b5eaa46a1e1a183f r.out.gdal --overwrite -c createopt="TFW=YES,COMPRESS=LZW" input=output412a4072b5e749b8b5eaa46a1e1a183f output="/home/alen/Desktop/obmocje.tif" Cleaning up temporary files... Starting GRASS GIS... Executing '/home/alen/.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 ERROR: Unable to open file ERROR: Raster map not found ERROR: Raster map or group not found Execution of '/home/alen/.qgis2//processing/grass7_batch_job.sh' finished. Cleaning up temporary files... Cleaning up temporary files... Starting GRASS GIS... Executing '/home/alen/.qgis2//processing/grass7_batch_job.sh' ... ERROR: Raster map not found ERROR: Raster map or group not found Execution of '/home/alen/.qgis2//processing/grass7_batch_job.sh' finished. Cleaning up temporary files..
For Windows 10 I tried for both the OSGeo4W install and the direct install. I tried it also with QGIS 2.16.x and 2.14.x for both the OS. In Linux Mint I apt-get autoremoved/autocleaned always after. In Windows 10, if I install GRASS 7.2.2 separately and run the tool from it, it works well. I tried to reconnect QGIS with the separate GRASS install, but it does the same error again.
It worked until a few updates ago: it works well in QGIS 2.18.5 with GRASS 7.2.0.
I noticed that also other r.* GRASS tools don't work anymore.
How can I make r.in.lidar work from QGIS?