Magento 2.4 Uncaught Error: Cannot instantiate interface

Question

I was trying to upgrade from magento 2.3.6 to 2.4.2.

Now I have an issue that any php bin/magento command is giving an error:

PHP Fatal error:  Uncaught Error: Cannot instantiate interface Magento\Framework\Interception\ConfigLoaderInterface in /var/www/html/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php:50
Stack trace:
#0 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create()
#1 /var/www/html/vendor/magento/framework/Interception/PluginList/PluginList.php(136): Magento\Framework\ObjectManager\ObjectManager->get()
#2 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Framework\Interception\PluginList\PluginList->__construct()
#3 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(66): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject()
#4 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create()
#5 /var/www/html/vendor/magento/framework/Interception/Interceptor.ph in /var/www/html/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php on line 50

I tried things like clear cache, redis flushall, but nothing helps. Any way to fix this?

what php version you are using? please switch to 7.4 if not yet switched — Gohil Rajesh, Jun 18 '21 at 03:27
Had the exact same issue, tried all the above. I realized it was most likely stubborn OPCACHE. If you're smarter than me, you can figure out a way to flush that. I find that rebooting the server is the quickest way to get it done. — Corinne, Jul 12 '21 at 03:15

Thomas Harding · Answer 1 · 2022-02-24T15:49:49.120

Check your app/etc/di.xml.

I had the same error and it looked like the absence of this line:

<preference for="Magento\Framework\Interception\ConfigLoaderInterface" type="Magento\Framework\Interception\PluginListGenerator" />

At the bottom of the preferences block. This was what was causing the Fatal Error message in my case.

However, the best thing to do is merge your di.xml with the 2.4 release di.xml.

I know it's been 7 months since you asked this question, so I hope this helps someone.

score 3 · Answer 2 · answered Jun 18 '21 at 15:36

3

What solved this for me was regenerating composer:

rm -rf vendor/*
composer clearcache
composer install
then compile magento (setup upgrade.... cache flush)

answered Jun 18 '21 at 15:36

justadev

235
1
2
11

Happy to hear you fixed it – Gohil Rajesh Jun 20 '21 at 11:58

score 0 · Answer 3 · answered Oct 13 '22 at 10:58

0

I faced the same problem.

I just ran the "composer install" command and got it fixed.

answered Oct 13 '22 at 10:58

Syed Abuthahir

1

score 0 · Answer 4 · answered Feb 23 '23 at 10:51

0

Quickest solution for me was to remove vendor, run composer update and then setup:upgrade. Resolved issue within 2 minutes

rm -fr vendor
composer update
setup:upgrade

answered Feb 23 '23 at 10:51

elfling

768
4
18

Magento 2.4 Uncaught Error: Cannot instantiate interface

4 Answers4