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 ('9f20e63f99b32a5bb68e84c80c2598ce', -1, 1713511352, 1713511352, '038fa8ac', 2, 0, 0)

Line : 187
File : sessions.php