phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a942f4b086e549fd55e266350a20c5a6', -1, 1768400762, 1768400762, 'd849d866', 0, 0, 0)

Line : 193
File : sessions.php