I authorized my account and set everything up for autotweet. Then I published a test post and got the following message:
Fatal error: Call to undefined function mb_detect_encoding() in /srv/www/htdocs/de_predigt_www/wp-content/plugins/wp-tweet-button/wp-tweet-button.php on line 1436
I have no idea what this means or how I could fic the problem.
Any help is appreciated!