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 ('0540b931ba2c5d6ed81ba15a5415fa64', -1, 1714004786, 1714004786, '030ca14d', -1, 0, 0)

Line : 187
File : sessions.php