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 ('b0fd75d557d7fc5b47e2c1a0c12a2f30', -1, 1730416519, 1730416519, '12bfefeb', 15, 0, 0)

Line : 195
File : sessions.php