Can't remove extensions

Question

Preconditions

• Magento 2.1.5

• PHP 7.0.16

• MySQL 5.7.16

Steps to reproduce

Extension installed via composer

$ php bin/magento module:uninstall Mageplaza_Seo -c -> Fail by authentication

$ ln -s /home/user/.composer/auth.json var/composer_home

$ php bin/magento module:uninstall Mageplaza_Seo -c

Successful

Expected result

Uninstall extension

Actual result

1. Broken site report
a:4:{i:0;s:217:"Cannot read contents from file "/var/www/html/vendor/mageplaza/magento-2-seo-extension/etc/module.xml" Warning!file_get_contents(/var/www/html/vendor/mageplaza/magento-2-seo-extension/etc/module.xml): failed to open stream: No such file or directory";i:1;s:4849:"#0 /var/www/html/vendor/magento/framework/Module/ModuleList/Loader.php(120): Magento\Framework\Filesystem\Driver\File->fileGetContents('/var/www/html/v...')
....

I remove references in eav table, try and nothing, I had to install it again

Answer 1

Try this

php bin/magento module:uninstall -r <Vendor>_<Module>

This command works only with modules defined as Composer packages.

If you did not install the module via composer, it won't work. You can only disable it via bin/magento module:disable _.

To remove the module, remove the folder , remove the record with module = '' from the table setup_module and remove any other tables or records added by the install of the module. Also remove the line with _ from app/etc/config.php

Ref: https://magento.stackexchange.com/a/105196/35758