composer error

[gonzasylv]

Q	A
Bug report?	[ x ]
Feature request?	[ ]
Support request?	[ ]

hi @cocolabssas ,

I can no longer install cocorico with composer.

Error: php composer.phar install

Installing dependencies from lock file (including require-dev)
Verifying lock file contents can be installed on current platform.
Your lock file does not contain a compatible set of packages. Please run composer update.

Problem 1
- ocramius/package-versions is locked to version 1.2.0 and an update of this package was not requested.
- ocramius/package-versions 1.2.0 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 2
- robloach/component-installer is locked to version 0.2.3 and an update of this package was not requested.
- robloach/component-installer 0.2.3 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 3
- wikimedia/composer-merge-plugin is locked to version v1.4.1 and an update of this package was not requested.
- wikimedia/composer-merge-plugin v1.4.1 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 4
- robloach/component-installer 0.2.3 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
- helios-ag/fm-elfinder-bundle 6.2.1 requires robloach/component-installer ~0.2 -> satisfiable by robloach/component-installer[0.2.3].
- helios-ag/fm-elfinder-bundle is locked to version 6.2.1 and an update of this package was not requested.

ocramius/package-versions only provides support for Composer 2 in 1.8+, which requires PHP 7.4.
If you can not upgrade PHP you can require composer/package-versions-deprecated to resolve this with PHP 7.0+.

You are using Composer 2, which some of your plugins seem to be incompatible with. Make sure you update your plugins or report a plugin-issue to ask them to support Composer 2.

OS: debian 10
Php: 7.3

[onalekitso]

Good day

Please downgrade composer to version 1 It worked for me.