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 ('25a701dd0c5b5191f7b6cd34eccea9a9', -1, 1747768205, 1747768205, '12dbc2e8', 16, 0, 0)

Line : 190
File : sessions.php