# Mautic can not run, after install mautic with Composer **URL:** \ **Category:** Product Support\ **Tags:** mautic-4\ **Created:** [January 19, 2023, 11:54am UTC](https://forum.mautic.org/t/mautic-can-not-run-after-install-mautic-with-composer/26809 "2023-01-19T11:54:48Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![hysen](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/hysen/32/9147_2.png) [@hysen](https://forum.mautic.org/u/hysen)\ **Post date:** [January 19, 2023, 11:54am UTC](https://forum.mautic.org/t/mautic-can-not-run-after-install-mautic-with-composer/26809/1 "2023-01-19T11:54:48Z")
**Your software** My Mautic version is: core mautic 4.0 My PHP version is: 7.4.3 My Database type and version is: MariaDB 10.5.18 **Your problem** My problem is: install with composer , and error message when open mautic webpage: [mautic.mydomain.com](http://mautic.mydomain.com) These errors are showing in the log: error message on page: Composer detected issues in your platform: Your Composer dependencies require a PHP version “\>= 8.0.0” Steps I have tried to fix the problem: 1. reinstall the mautic with composer, same issue. 2. resinstall ubunt 18.04, reinstall mautic with composer, same issue. 3. resinstall ubunt 18.04, reinstall mautic with composer, run composer update, same issue. 4. Edit composer.json, do “platform-check”: false, reboot the server, same issue. 5. resinstall ubunt 18.04, reinstall mautic with composer, install php8.0, same issue. The article referenced is : > **[Installing with Composer](https://docs.mautic.org/en/setup/how-to-install-mautic/install-and-manage-mautic-with-composer)** > > How to install Mautic with Composer. > **[How To Install Mautic 3 Email Marketing System \[Updated Step by Step Guide)](https://h-educate.com/how-to-install-mautic/)** > > In this Guide, I will show you How to setup and configure Mautic step b step from getting a server, till running and configuring your first campaign. thanks for all patience.