17 Mar 2021, 12:46

@Sanjeev

The "ocramius/package-versions" plugin was skipped because it requires a Plugin API version ("^1.0.0") that does not match your Composer installation ("2.0.0"). You may need to run composer update with the "--no-plugins" option.
The "uvdesk/composer-plugin" plugin was skipped because it requires a Plugin API version ("^1.0") that does not match your Composer installation ("2.0.0"). You may need to run composer update with the "--no-plugins" option.
The "symfony/flex" plugin was skipped because it requires a Plugin API version ("^1.0") that does not match your Composer installation ("2.0.0"). You may need to run composer update with the "--no-plugins" option.
./composer.json has been updated
The "ocramius/package-versions" plugin was skipped because it requires a Plugin API version ("^1.0.0") that does not match your Composer installation ("2.0.0"). You may need to run composer update with the "--no-plugins" option.
The "uvdesk/composer-plugin" plugin was skipped because it requires a Plugin API version ("^1.0") that does not match your Composer installation ("2.0.0"). You may need to run composer update with the "--no-plugins" option.
The "symfony/flex" plugin was skipped because it requires a Plugin API version ("^1.0") that does not match your Composer installation ("2.0.0"). You may need to run composer update with the "--no-plugins" option.
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - symfony/flex is locked to version v1.4.8 and an update of this package was not requested.
    - symfony/flex v1.4.8 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
  Problem 2
    - uvdesk/composer-plugin is locked to version v1.0.1 and an update of this package was not requested.
    - uvdesk/composer-plugin v1.0.1 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
  Problem 3
    - ocramius/package-versions 1.4.1 requires composer-plugin-api ^1.0.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
    - doctrine/doctrine-migrations-bundle 2.1.2 requires doctrine/migrations ^2.2 -> satisfiable by doctrine/migrations[2.2.0].
    - doctrine/migrations 2.2.0 requires ocramius/package-versions ^1.3 -> satisfiable by ocramius/package-versions[1.4.1].
    - doctrine/doctrine-migrations-bundle is locked to version 2.1.2 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.

I'm now resuming my backup as it not works.
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