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 ('724f517090c5ac9d8b38a04bfe5b0d51', -1, 1713553762, 1713553762, '12743e2d', 3, 0, 0)

Line : 187
File : sessions.php