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 ('31f6187eb6d9e7554a51d7d9cec59195', -1, 1714024190, 1714024190, '03830d25', -4, 0, 0)

Line : 187
File : sessions.php