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Wordpress - Activate a plugin through PHPMyAdmin or FTP?

Wordpress - Undefined offset: 0 in > [...] /wp-includes/capabilities.php on line 1067

Wordpress - Fatal error: Call to undefined function wp() in ../wp-blog-header.php?

Fatal error on cart REST API calls: Cannot instantiate interface Magento\Framework\MessageQueue\ConfigInterface

Magento 2.3.0 installation error

Magento 2.2.2 : Allowed memory size of 792723456 bytes exhausted (tried to allocate 184320 bytes)

Magento 2.2 error: Unable to unserialize value

Magento1 createBlock method returns "bool(false)" in livehost

Uncaught TypeError: Argument 1 passed to [...] must be an instance of

How can solve error Magento 1.xx on PHP 7?