Packagist.org: failed to update, invalid composer.json data

[sinkcup]

The laravel-fans/docker package of which you are a maintainer has
failed to update due to invalid data contained in your composer.json.
Please address this as soon as possible since the package stopped updating.

It is recommended that you use composer validate to check for errors when you
change your composer.json.

Below is the full update log which should highlight errors as
"Skipped branch ...":

[Composer\Repository\InvalidRepositoryException]: Some branches contained invalid data and were discarded, it is advised to review the log and fix any issues present in branches

Reading composer.json of laravel-fans/docker (0.5.1)
Found cached composer.json of laravel-fans/docker (0.5.1)
Reading composer.json of laravel-fans/docker (0.5.0)
Found cached composer.json of laravel-fans/docker (0.5.0)
Reading composer.json of laravel-fans/docker (0.4.0)
Found cached composer.json of laravel-fans/docker (0.4.0)
Reading composer.json of laravel-fans/docker (0.3.5)
Found cached composer.json of laravel-fans/docker (0.3.5)
Reading composer.json of laravel-fans/docker (0.3.4)
Found cached composer.json of laravel-fans/docker (0.3.4)
Reading composer.json of laravel-fans/docker (0.3.3)
Found cached composer.json of laravel-fans/docker (0.3.3)
Reading composer.json of laravel-fans/docker (0.3.2)
Found cached composer.json of laravel-fans/docker (0.3.2)
Reading composer.json of laravel-fans/docker (0.3.1)
Found cached composer.json of laravel-fans/docker (0.3.1)
Reading composer.json of laravel-fans/docker (0.3.0)
Found cached composer.json of laravel-fans/docker (0.3.0)
Reading composer.json of laravel-fans/docker (0.2.0)
Found cached composer.json of laravel-fans/docker (0.2.0)
Reading composer.json of laravel-fans/docker (0.1.1)
Found cached composer.json of laravel-fans/docker (0.1.1)
Reading composer.json of laravel-fans/docker (0.1.0)
Found cached composer.json of laravel-fans/docker (0.1.0)
Reading composer.json of laravel-fans/docker (main)
Importing branch main (dev-main)
Reading composer.json of laravel-fans/docker (laravel-6)
Importing branch laravel-6 (dev-laravel-6)
Skipped branch laravel-6, Invalid package information:
require-dev.laravel-fans/docker : a package cannot set a require-dev on itself

Reading composer.json of laravel-fans/docker (laravel-7)
Importing branch laravel-7 (dev-laravel-7)
Skipped branch laravel-7, Invalid package information:
require-dev.laravel-fans/docker : a package cannot set a require-dev on itself

Reading composer.json of laravel-fans/docker (laravel-8)
Importing branch laravel-8 (dev-laravel-8)
Skipped branch laravel-8, Invalid package information:
require-dev.laravel-fans/docker : a package cannot set a require-dev on itself

Reading composer.json of laravel-fans/docker (laravel-9)
Importing branch laravel-9 (dev-laravel-9)
Skipped branch laravel-9, Invalid package information:
require-dev.laravel-fans/docker : a package cannot set a require-dev on itself

[sinkcup]

Packagist.org doesn't set ignore branches or only build some branches.

HACK: remove composer.json in laravel-x branch.

[sinkcup]

add a dir, not remove