how can I install the source ban in 000webhostapp.com help :(
 

when I try to log in when the installation finished appears

Warning: session_destroy (): Trying to destroy uninitialized session in /storage/ssd1/623/15810623/public_html/steamopenid.php on line 85

Warning: session_name (): Cannot change session name when headers already sent in /storage/ssd1/623/15810623/public_html/includes/SessionManager.php on line 6

Warning: session_set_cookie_params (): Cannot change session cookie parameters when headers already sent in /storage/ssd1/623/15810623/public_html/includes/SessionManager.php on line 11

Warning: session_start (): Cannot start session when headers already sent in /storage/ssd1/623/15810623/public_html/includes/SessionManager.php on line 12

Warning: session_regenerate_id (): Cannot regenerate session id - session is not active in /storage/ssd1/623/15810623/public_html/includes/SessionManager.php on line 54

Warning: session_id (): Cannot change session id when headers already sent in /storage/ssd1/623/15810623/public_html/includes/SessionManager.php on line 57

Warning: session_start (): Cannot start session when headers already sent in /storage/ssd1/623/15810623/public_html/includes/SessionManager.php on line 58

Warning: Cannot modify header information - headers already sent by (output started at /storage/ssd1/623/15810623/public_html/steamopenid.php:85) in /storage/ssd1/623/15810623/public_html/steamopenid.php on line 93
help :(