Fatal error: Uncaught ArgumentCountError: Too few arguments to function rechner_mk_head(), 1 passed in /homepages/0/d13393496/htdocs/energiesparen/rechner_single.php on line 4 and exactly 3 expected in /homepages/0/d13393496/htdocs/energiesparen/rechner.inc.php:64 Stack trace: #0 /homepages/0/d13393496/htdocs/energiesparen/rechner_single.php(4): rechner_mk_head('Energiebedarf E...') #1 {main} thrown in /homepages/0/d13393496/htdocs/energiesparen/rechner.inc.php on line 64