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 ('d1d560a3540b85c65f3a7a0f239fd1b2', -1, 1713993214, 1713993214, '038ec5d4', 0, 0, 0)

Line : 187
File : sessions.php