1. magento-2-installation-errors

Installation Errors in Magento 2

Installing and configuring Magento 2 can be a complex process. During the installation, there might be errors that can cause delays in the process. This guide will cover some of the most common errors encountered during the installation and their solutions.

Error: SQLSTATE[HY000] [2002] Connection refused

This error typically occurs when the Magento 2 installation script is unable to connect to the database. One possible solution is to check if the database server is running and if the connection details in the app/etc/env.php file are correct. Also, make sure that the database user has necessary permissions.

Error: Composer memory allocation error

If you encounter this error during the installation, it means your system has insufficient memory allocation to perform Composer operations. To fix this, you can increase the memory limit of your PHP installation. You can do this by editing the php.ini file and changing the memory_limit configuration. For example, you can set memory_limit = 2G to allocate 2 gigabytes of memory.

Error: Deprecated Functionality: iconv() is deprecated in PHP 7.2

This error occurs when you are using an outdated version of Magento 2 that is not compatible with PHP 7.2. To fix this problem, you should either upgrade your Magento 2 installation to a later version that is compatible with PHP 7.2 or downgrade your PHP version to a lower one that is compatible with your version of Magento 2.

Error: Class Magento\Framework\App\Http\Interceptor does not exist

This error is typically caused by files being incorrectly installed or directories being incorrectly named. In some instances, it can be caused by incompatible versions of PHP, Apache or MySQL being used. To resolve this issue, you should check that all files are correctly installed, directories are correctly named, and that the correct version of PHP, Apache and MySQL are being used.

Error: Can't create directory /pub/static/

This error typically occurs when incorrect file permissions are set for the pub/static directory. To fix this, you should navigate to the directory where the error is located and run the following command:

chmod -R 777 pub/static

Important Points

  • Magento 2 installation can be a complex process.
  • Installation errors can cause delays in the process.
  • Common installation errors in Magento 2 include SQL connection issues, memory allocation errors, deprecated functionality errors, and incorrect file permissions.
  • These errors can be resolved by checking connection details, increasing memory limits, upgrading and downgrading versions, and correcting file permissions.


This guide has discussed some of the most common installation errors encountered during the Magento 2 installation process. By following the solutions outlined above, you can successfully install and configure Magento 2 without encountering any errors.

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