Heroku move region-CodePudding

I'm trying to migrate the region of my heroku from the US to the EU region

PS C:\Users\user\Desktop\sourceapp> heroku update
heroku: Updating CLI... already on latest version: 7.59.2
PS C:\Users\user\Desktop\sourceapp> heroku plugins:install heroku-fork
Installing plugin heroku-fork... installed v4.1.29
PS C:\Users\user\Desktop\sourceapp> heroku fork --from sourceapp --to targetapp --region eu
HEROKU FORK IS UNMAINTAINED AND MAY NO LONGER FUNCTION.
HEROKU FORK IS UNMAINTAINED AND MAY NO LONGER FUNCTION.
HEROKU FORK IS UNMAINTAINED AND MAY NO LONGER FUNCTION.
HEROKU FORK IS UNMAINTAINED AND MAY NO LONGER FUNCTION.
HEROKU FORK IS UNMAINTAINED AND MAY NO LONGER FUNCTION.
HEROKU FORK IS UNMAINTAINED AND MAY NO LONGER FUNCTION.
 !    No slug for app sourceapp was found.
 !    Push some code to sourceapp before forking it.

Am I doing something wrong or is heroku-fork now deprecated?

CodePudding user response：

heroku-fork still works. But it only works if there is actually any code to fork. The important lines here are:

 !    No slug for app sourceapp was found.
 !    Push some code to sourceapp before forking it.