Requirements problem

OK
Web serverApache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips mod_nss/1.0.14 NSS/3.28.4 PHP/7.2.31
OK
PHP7.2.31
OK
PHP register globalsDisabled
OK
PHP extensionsEnabled
OK
Database supportEnabled
OK
PHP memory limit128M
OK
File systemWritable (public download method)
Error
Unicode libraryError
Multibyte string input conversion in PHP is active and must be disabled. Check the php.ini mbstring.http_input setting. Please refer to the PHP mbstring documentation for more information.
Warning
PHP memory limit128M
Consider increasing your PHP memory limit to 196M to help prevent errors in the installation process. Increase the memory limit by editing the memory_limit parameter in the file /etc/php.ini and then restart your web server (or contact your system administrator or hosting provider for assistance). See the Drupal requirements for more information.
OK
Settings fileThe ./sites/default/settings.php file exists.
OK
Settings fileThe settings file is writable.
Check the error messages and proceed with the installation.