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Technical post for those who are looking for this information. If you’ve come across this blog post, then you probably know what this is and are just looking for a quick solution to the problem, so below is what worked for us. We needed PHP mbstring installing on the server, specifically related to a WPML (WordPress MultiLingual) setup we had in place which required this setting to work. So we needed to rebuild the default Apache & PHP settings accordingly. For reference and in case this relates to anyone else, this is the error message we were receiving which required this specific update;

Warning: filter_input(): charset `ANSI_X3.4-1968′ not supported, assuming utf-8 in /wp-content/plugins/sitepress-multilingual-cms/inc/not-compatible-plugins.php on line 32


Step 1: Login to WHM

I’m assuming you know how to do this…


Step 2: Navigate to EasyApache

Fairly straight forward;

Navigate to EasyApache


Step 3: Edit the Default Profile

Click on the gear icon;

Edit the Default Profile


Step 4: Follow the list of Settings

Work through the list of settings clicking on “Next” until you reach the “Exhaustive Options List”. Within here you will find an option for “PHP Mbstring” which can be selected to be turned on;

Follow Configuration Options


Step 5: Save & Build

One you have worked through the above settings your web server will run through the whole build process and eventually complete as can be seen below;

Build Complete



As with any web server changes, make sure you have a backup before working through this. It goes without saying, but never the less, every web server is different so please make sure you understand what you are doing before jumping in with these types of changes.

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Michael Cropper

Founder & Managing Director at Contrado Digital Ltd
Michael has been running Contrado Digital for over 10 years and has over 15 years experience working across the full range of disciplines including IT, Tech, Software Development, Digital Marketing, Analytics, SaaS, Startups, Organisational and Systems Thinking, DevOps, Project Management, Multi-Cloud, Digital and Technology Innovation and always with a business and commercial focus. He has a wealth of experience working with national and multi-national brands in a wide range of industries, across a wide range of specialisms, helping them achieve awesome results. Digital transformation, performance and collaboration are at the heart of everything Michael does.