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 ('6687bc8fa197fa2ff05e8d1c8cd9de2e', -1, 1737556905, 1737556905, '031644ee', 60, 0, 0)

Line : 187
File : sessions.php