Modules should not use a "version: VERSION" line in their .info file

The content of the .info.yml file is the following.

name: 'Advanced Text Formatter'
type: module
description: 'Provides an additional formatter for text field, text area and text format.'
package: Fields
version: VERSION
core: 8.x
dependencies:
  - text
  - filter

Third-party modules should not use version: VERSION. Only Drupal core modules use it, while for third-party modules, that is added from the code packaging the code in an archive.