PHP Fatal error: Class Magento\Setup\Mvc\Bootstrap\InitParamListener contains 1 abstract method

Question

I have updated the version of magento from 2.3.4 => 2.3.7 but. Composer commands runs successfully with no error. But now when I try to run magento commands eg. s:up or compile it does not work and returns an error :

PHP Fatal error: Class Magento\Setup\Mvc\Bootstrap\InitParamListener contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Laminas\ServiceManager\Factory\FactoryInterface::__invoke) in /htdocs/setup/src/Magento/Setup/Mvc/Bootstrap/InitParamListener.php on line 32

I tried composer update , composer install , removed vendor folder and then composer install but no luck.

Please help me to solve the issue I will be very thankful to you.

Answer 1

To fix this issue, copy the setup folder from magento 2.3.7 another project or download it from magento git repo: https://github.com/magento/magento2/tree/2.3.7/setup

It works for all others magento versions, just change 2.3.7 to your magento upgrade version. For example, you want to upgrade to magento 2.4.3, the setup folder can get in https://github.com/magento/magento2/tree/2.4.3/setup

Answer 2

rm -rf vendor/
composer update

Answer 3

The fact that you got this error suggests that you were using the setup directory from the older Magento version. In such case you could do what snez suggested above:

rm -rf vendor
composer install

But this would merge the setup directory from the newer version with the one from the older version, so it'd be good to remove it first:

rm -rf vendor
rm -rf setup
composer install

Technically you should do this with all files from the older version you happen to have:

rm -rf vendor
rm -rf setup
rm -rf lib
rm -rf dev
...
composer install

That is keeping in mind if you need any changes you made in case you keep them in VCS.

Answer 4

In that case, you'll need to figure out why exactly that file isn't being updated, what you could try is removing your entire vendor directory and run composer install, and after that check if the bin/magento file is now updated. If that still doesn't resolve it, check if the file vendor/magento/magento2-base/bin/magento is correct. If this one is correct and bin/magento is not correct, then you have a problem where that first file isn't being copied to the second file, which should normally happen during composer install.