note 129405 added to mbstring.installation

I executed the command to install this extension but, somethings is wrong (Ubuntu Server 20.04 - PHP 8.1) sudo apt install php8.1-mbstring Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: php8.1-mbstring : Depends: libonig5 (>= 6.8.1) but it is not installable E: Unable to correct problems, you have held broken packages. ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.13.131 (proxied: 190.71.135.164) ---- Manual Page -- https://php.net/manual/en/mbstring.installation.php Edit -- https://main.php.net/note/edit/129405 Del: integrated -- https://main.php.net/note/delete/129405/integrated Del: useless -- https://main.php.net/note/delete/129405/useless Del: bad code -- https://main.php.net/note/delete/129405/bad+code Del: spam -- https://main.php.net/note/delete/129405/spam Del: non-english -- https://main.php.net/note/delete/129405/non-english Del: in docs -- https://main.php.net/note/delete/129405/in+docs Del: other reasons-- https://main.php.net/note/delete/129405 Reject -- https://main.php.net/note/reject/129405 Search -- https://main.php.net/manage/user-notes.php