Hi,
Thank so much. I Have upgrade the mysql server
Best regards
Hello,
This error:
Unknown character set: 'utf8mb4'
Means you are running an out-dated server. Your server must be running Mysql 5.5 or higher to install a site shaper. You need to contact your hosting provider and tell them to upgrade you to at least that version, not just for the site shaper install but also for security and performance. 5.5 has been out for several years now.