Fatal error: Cannot redeclare print_embed_styles() (previously declared in /home/.sites/96/site6909889/web/wp-includes/deprecated.php:5887) in /home/.sites/96/site6909889/web/wp-includes/embed.php on line 1066

Fatal error: Uncaught Error: Call to a member function set() on null in /home/.sites/96/site6909889/web/wp-includes/l10n.php:806
Stack trace:
#0 /home/.sites/96/site6909889/web/wp-includes/l10n.php(900): load_textdomain('default', '/home/.sites/96...', 'de_DE')
#1 /home/.sites/96/site6909889/web/wp-includes/class-wp-fatal-error-handler.php(47): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
  thrown in /home/.sites/96/site6909889/web/wp-includes/l10n.php on line 806