Cannot find proj.db

[Pommespapst]

When importing bw2regional I get the following error messages:

proj_create: Cannot find proj.db
proj_create: no database context specified
ERROR 4: Unable to open EPSG support file gcs.csv. Try setting the GDAL_DATA environment variable to point to the directory containing EPSG csv files.
proj_create: Cannot find proj.db
proj_create: no database context specified
Unable to open EPSG support file gcs.csv. Try setting the GDAL_DATA environment variable to point to the directory containing EPSG csv files.

[Pommespapst]

It seems that the path to the proj library is not set during installation. Adding the following lines before the import statement resolved the issue:

import os
os.environ["PROJ_LIB"] = r"C:\Programs\miniconda\envs\BrightwayConda\Library\share"

The path must point to the "proj" folder. If the folder is not contained in the above directory, try one of these:
os.environ['PROJ_LIB'] = r'c:\Users\username\AppData\Local\conda\conda\envs\envname\Library\share'
os.environ['PROJ_LIB'] = '<path_to_anaconda>/share/proj'
os.environ['PROJ_LIB'] = r'C:\Users(xxxx)\AppData\Local\Continuum\anaconda3\pkgs\proj4-5.1.0-hfa6e2cd_1\Library\share'

[janceviciusjulius]

Hello. What about "ERROR 1: PROJ: proj_create: no database context specified" while running gdal_merge.py