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 ('991353223ff3e66ae2e1c02644efb8e6', -1, 1737562775, 1737562775, '0389c82d', 64, 0, 0)

Line : 187
File : sessions.php