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 ('181c5a35b6cbc8aabe9da235d6d4c86d', -1, 1730420202, 1730420202, '12e2b9e7', 37, 0, 0)

Line : 195
File : sessions.php