Installing DKAN with composer failes

[simonovskifilip]

I was reading the docs for DKAN2 and tryed to install it by running:
composer require 'getdkan/dkan' and composer require getdkan/dkan:2.9.1 This gives the following error message:

Problem 1
    - Root composer.json requires getdkan/dkan 2.9.0 -> satisfiable by getdkan/dkan[2.9.0].
    - getdkan/dkan 2.9.0 requires drupal/admin_toolbar ^2.3 -> could not be found in any version, there may be a typo in the package name.

[JeffersonWood]

Any solution to this? Just tried to install using composer on our development site, but failed because admin_toolbar was locked to version ^3.0

[paul-m]

Duplicate of #3402

Read there for a solution.