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 ('e4899b5d7514e7e3c224e62474e5f492', -1, 1713942760, 1713942760, '12769172', 2, 0, 0)

Line : 187
File : sessions.php