1-click upgrade Error

[LahtiTo]

Hello all

I know the wise men say, it's not the best idea to use the 1-click upgrade, but still...

We are trying to update PS 1.7.6.7 to the newest version, but get the error after the files have been updated.

And to the error we go:

[INTERNAL] [URL]/vendor/symfony/symfony/src/Symfony/Component/Config/Loader/FileLoader.php line 168 - Symfony\Component\Config\Exception\FileLoaderLoadException: The file "[URL]/app/config/config.yml" does not contain valid YAML: Missing value for tag "php/const:PrestaShopBundle\Service\Form\MultistoreCheckboxEnabler::MULTISTORE_FIELD_PREFIX" at line 85 (near "multistore_field_prefix: !php/const:PrestaShopBundle\Service\Form\MultistoreCheckboxEnabler::MULTISTORE_FIELD_PREFIX") in [URL]/app/config/config.yml (which is being imported from "[URL]/app/config/config_prod.yml"). 
#0 [URL]/vendor/symfony/symfony/src/Symfony/Component/Config/Loader/FileLoader.php(90): Symfony\Component\Config\Loader\FileLoader->doImport('/home/customer/...', NULL, false, '/home/customer/...') 
#1 [URL]/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php(195): Symfony\Component\Config\Loader\FileLoader->import('config.yml', NULL, false, '/home/customer/...') 
#2 [URL]/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php(127): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->parseImports(Array, '/home/customer/...') 
#3 [URL]/vendor/symfony/symfony/src/Symfony/Component/Config/Loader/DelegatingLoader.php(40): Symfony\Component\DependencyInjection\Loader\YamlFileLoader->load('/home/customer/...', NULL) 
#4 [URL]/app/AppKernel.php(150): Symfony\Component\Config\Loader\DelegatingLoader->load('/home/customer/...') 
#5 [URL]/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(776): AppKernel->registerContainerConfiguration(Object(Symfony\Component\Config\Loader\DelegatingLoader)) 
#6 [URL]/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(642): Symfony\Component\HttpKernel\Kernel->buildContainer() 
#7 [URL]/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(135): Symfony\Component\HttpKernel\Kernel->initializeContainer() 
#8 [URL]/modules/autoupgrade/classes/UpgradeTools/SymfonyAdapter.php(74): Symfony\Component\HttpKernel\Kernel->boot() 
#9 [URL]/modules/autoupgrade/classes/UpgradeTools/CoreUpgrader/CoreUpgrader17.php(50): PrestaShop\Module\AutoUpgrade\UpgradeTools\SymfonyAdapter->initAppKernel() 
#10 [URL]/modules/autoupgrade/classes/UpgradeTools/CoreUpgrader/CoreUpgrader.php(86): PrestaShop\Module\AutoUpgrade\UpgradeTools\CoreUpgrader\CoreUpgrader17->initConstants() 
#11 [URL]/modules/autoupgrade/classes/TaskRunner/Upgrade/UpgradeDb.php(41): PrestaShop\Module\AutoUpgrade\UpgradeTools\CoreUpgrader\CoreUpgrader->doUpgrade() 
#12 [URL]/[ADMIN]/autoupgrade/ajax-upgradetab.php(53): PrestaShop\Module\AutoUpgrade\TaskRunner\Upgrade\UpgradeDb->run() 
#13 {main}

The strangest thing is, that I managed to upgrade earlier this week, but not today.

Can someone help me to tackle this error? Thank you in advance.

Always getting goosebumps when upgrading PrestaShop: how on earth this can be so frustrating all the time...

Edited October 10, 2021 by LahtiTo
Admin URL (see edit history)

[Crezzur.com]

Hello @LahtiTo if you want we can help you with your upgrade issues if you still did not resolve them. You can contact us trough PM our using our email [email protected]

[LahtiTo]

Thank you @Crezzur. This time we came to the solution to install another PS to subfolder. Copy the store by PresTools and CopyData. Then we upgraded that shop and everything went fine. Now just some finetuning and publish this upgraded version.

But I'll keep you in mind for the next time we have problems.