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 ('f2b6bba072d72611d3a12940ec4ca8e8', -1, 1713287660, 1713287660, '12decdd3', 3, 0, 0)

Line : 187
File : sessions.php