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Since we upgraded Magento to 2.2.5, after every deployment to production (which includes git pull..., composer update & all other relevant Magento CLI commands for production deployment), our indexers stops to work & when we check the cron by running php bin/magento cron:run we get this error:

PHP Fatal error: Uncaught Error: Cannot instantiate interface Magento\Framework\Lock\LockManagerInterface in /.../vendor/magento/framework/ObjectManager/Factory/AbstractFactory

The only way we found that seems to solve this (temporarily) is to clear the composer cache, remove the vendor dir, running composer update again & re-deploying Magento again.
We have to do that every time, after every deployment & it's really annoying.

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  • did you got any solution for this?
    – Piyush
    Commented Aug 20, 2018 at 13:15
  • Not yet. We are still doing what I mentioned on the last paragraph...
    – Pini
    Commented Aug 21, 2018 at 6:47
  • Having the same issue... Your workaround does not work for us. What version of PHP are you using? Have you seen: github.com/magento/magento2/issues/16793 Do you have Wyomind Cron Scheduler in your build?
    – Flipmedia
    Commented Aug 21, 2018 at 23:34
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    PHP 7.0.30 & yes, we have Wyomind Cron Scheduler.
    – Pini
    Commented Aug 22, 2018 at 5:41
  • I've spent time removing Wyomind Cron Scheduler and in fact all Wyomind extension. I still have the error... I have also disabled all third party extensions, error still persists.
    – Flipmedia
    Commented Aug 22, 2018 at 12:24

2 Answers 2

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Your di.xml is stale / not upgraded correctly, see the below grep result, if you do not get this result from you di.xml file is the issue.

$grep Lock app/etc/di.xml 
<preference for="Magento\Framework\Lock\LockManagerInterface" type="Magento\Framework\Lock\Backend\Database" />

In our case I found that our deployment script was excluding di.xml from being rolled out to production. I removed this exclusion and redeployed to correct the issue.

You may find that permissions / user / group allocated to di.xml stopped the file being updated...

See solution here with correct di.xml supplied: https://github.com/magento/magento2/issues/16793#issuecomment-418334379

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Try clearing your cache, and generated files, and then retry running your commands.

rm -rf var/cache/ generated/
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