Magento 2 : composer update giving this error

Question

I am using magento version 2.3.1

When I have updated composer via command

php composer update

I get this error

Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead.

Package phpunit/phpunit-mock-objects is abandoned, you should avoid using it. No replacement was suggested.

please anyone guide me how to solve this error

currently not working any command, giving same error when run command

thanks in advance

Answer 1

It's not an error, it's a warning. Informing you that the package container-interop/container-interop is abandoned not receiving new updates. It is up to you whether you want to continue using container-interop/container-interop or decide to use the package psr/container which still receives updates.

When making a decision take account with security and functionality. I wouldn't recommend changing here unless the old packages receives errors due to other packages being updatet.

Answer 2

Try this, that should do the trick

composer remove container-interop/container-interop
composer require psr/container