I just installed a fresh new install of PostgreSQL-10.5-1-win64-bigsql
Once installed I wanted to add the PostGIS extension ran:
CREATE EXTENSION postgis;
Got error message could not find
I found the file at this location
So I thought I could just copy the postgis.control into the directory where it was being looked for and ran the create extension and got this:
ERROR: extension "postgis" has no installation script nor update path for version "2.4.4"