The following bug has been logged on the website:
Bug reference: 16078
Logged by: David Suárez
Email address: suarezp.david@gmail.com
PostgreSQL version: 12.0
Operating system: Mac Os 10.15
Description:
When updating to Mac Os 10.15 I cannot run the stack builder application. I
have completely uninstalled the postgres and installed it and always have it
happen. I have tried it on several computers and I think there is a
compatibility problem. They could confirm it to me, because I am trying to
install the postgis and I cannot. Thank you