##if you get the following error:

django.core.exceptions.ImproperlyConfigured: Could not find the GDAL library (tried "gdal", "GDAL", "gdal2.2.0", "gdal2.1.0", "gdal2.0.0", "gdal1.11.0", "gdal1.10.0", "gdal1.9.0"). Is GDAL installed? If it is, try setting GDAL_LIBRARY_PATH in your settings.

you must install on the host machine the following packages:
`sudo apt-get install binutils libproj-dev gdal-bin`

next you must update POstgres to use POSTGIS

[https://docs.djangoproject.com/en/2.1/ref/contrib/gis/install/postgis/](https://docs.djangoproject.com/en/2.1/ref/contrib/gis/install/postgis/)

## update postgres

### the following packages must be installed:
(x.x matching the PostgreSQL version you want to install)

postgresql-x.x
postgresql-x.x-postgis
postgresql-server-dev-x.x
python-psycopg2 

find out the postgres server number:

`apt list --installed | grep 'post'`