cancel
Showing results for 
Search instead for 
Did you mean: 

Fatal error trying to install Data Migration Tool

   Did you know you can see the translated content as per your choice?

Translation is in progress. Please check again after few minutes.

Fatal error trying to install Data Migration Tool

I have installed a fresh copy of Magento 2.3.1 and I'm trying to install the data migration tool using the instructions on github.com/magento/data-migration-tool

composer config repositories.data-migration-tool git https://github.com/magento/data-migration-tool

composer require magento/data-migration-tool:2.3.1

I get

./composer.json has been updated

but then get the following error

Fatal error: Uncaught TypeError: Return value of Magento\InventoryComposerInstaller\Plugin_composer_tmp1::initModuleDeployment() must be an instance of Magento\InventoryComposerInstaller\void, none returned in phar:///opt/cpanel/composer/bin/composer/src/Composer/Plugin/PluginManager.php(195) : eval()'d code:69 Stack trace:

0 [internal function]: Magento\InventoryComposerInstaller\Plugin_composer_tmp1->initModuleDeployment(Object(Composer\Script\Event)) 1 phar:///opt/cpanel/composer/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(176): call_user_func(Array, Object(Composer\Script\Event)) 2 phar:///opt/cpanel/composer/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(96): Composer\EventDispatcher\EventDispatcher->doDispatch(Object(Composer\Script\Event)) 3 phar:///opt/cpanel/composer/bin/composer/src/Composer/Installer.php(204): Composer\EventDispatcher\EventDispatcher->dispatchScript('pre-update-cmd', true) 4 phar:///opt/cpanel/composer/bin/composer/src/Composer/Command/RequireCommand.php(18 in phar:///opt/cpanel/composer/bin/composer/src/Composer/Plugin/PluginManager.php(195) : eval()'d code on line 69

Can someone point me int he right direction to resolve this issue?

Thanks

2 REPLIES 2

Re: Fatal error trying to install Data Migration Tool

Hello @airsoftsupplydrop 

 

Please run below command

composer require magento/data-migration-tool

 

it will download automatically new version.

 

Hope it will help you, if works then mark as a solution.


Problem solved? Click Kudos & Accept as Solution!
Sunil Patel
Magento 2 Certified Professional Developer & Frontend Developer

Re: Fatal error trying to install Data Migration Tool

Still get the same error.