iconv error on special last character in rich text field

[pieterjandebruyne]

Hi,

Error on saving entries when we have a rich text field ending in a special character (like é, ö, ...) is used to generate SEO keywords using the "Keywords from field" option and the field with the character..

It works when there is a space behind the character but otherwise it crashes on a iconv error..

Seems to be fixed in craft 3 but not for the craft 2 plugin

craft/plugins/seomatic/services/SeomaticService.php(3316)
$text = iconv(mb_detect_encoding($text, mb_detect_order(), true), "UTF-8//IGNORE", $text);

Info:
Craft CMS 2.7.8
SEOmatic 1.1.56
PHP 7.1.25

Also tested on:
Craft CMS 2.6.3012
SEOmatic 1.1.56