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 ('4f405e2107fc52df3277ff6ad2912e01', -1, 1713298796, 1713298796, '038ec5d4', -4, 0, 0)

Line : 187
File : sessions.php