phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('490027e680db65d6641f1e73d1625460', -1, 1714614578, 1714614578, '030f064d', -55, 0, 0)

Line : 187
File : sessions.php