/app/magento2# composer update Loading composer repositories with package information In Laminas\DependencyPlugin\DependencyRewriterV2::onPrePoolCreate Updating dependencies Nothing to modify in lock file Installing dependencies from lock file (including require-dev) Nothing to install, update or remove Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead. Generating autoload files composer/package-versions-deprecated: Generating version class... composer/package-versions-deprecated: ...done generating version class 92 packages you are using are looking for funding. Use the composer fund command to find out more!

php ./vendor/bin/ece-tools schema:generate || true

In Container.php line 99:

No lockfile found. Unable to read locked packages

In Locker.php line 279:

No lockfile found. Unable to read locked packages

Please help on this issue

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  • please any one help on this...Thanks in advance Commented Sep 18, 2021 at 2:59

1 Answer 1


I had the same issue and after searching for a while I noticed that my composer.lock file was missing from my project. after adding it back from local history, the issue got fixed.

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