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 ('80a31d65e9fe329e6ca481722e1609e6', -1, 1757768781, 1757768781, 'd849d87c', 2, 0, 0)

Line : 187
File : sessions.php