phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '750d5a548e652b133a271b0d9bedbfb1' for key 1

INSERT INTO aethernativ_13_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('750d5a548e652b133a271b0d9bedbfb1', -1, 1269144316, 1269144316, '0ab0a7b9', -7, 0, 0)

Line : 187
File : sessions.php