phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('76d1b23722ceead5d5540013a34622e4', -1, 1718496855, 1718496855, '0390e087', -2, 0, 0)

Line : 187
File : sessions.php