Warning: session_start(): Session cannot be started after headers have already been sent in /home/httpd/vhosts/webmultimedia.ch/links.webmultimedia.ch/index.php on line 26

Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'wmm_linker'@'localhost' (using password: YES) in /home/httpd/vhosts/webmultimedia.ch/links.webmultimedia.ch/db_verbindung.php:7
Stack trace:
#0 /home/httpd/vhosts/webmultimedia.ch/links.webmultimedia.ch/db_verbindung.php(7): mysqli_connect('localhost', 'wmm_linker', Object(SensitiveParameterValue), 'webmultimedia_c...')
#1 /home/httpd/vhosts/webmultimedia.ch/links.webmultimedia.ch/index.php(27): include('/home/httpd/vho...')
#2 {main}
  thrown in /home/httpd/vhosts/webmultimedia.ch/links.webmultimedia.ch/db_verbindung.php on line 7