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 ('4d1e4ad9b56fda8116cb29e86e73aae2', -1, 1730417954, 1730417954, '12d9b70a', 19, 0, 0)

Line : 195
File : sessions.php