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 ('7cedffa2648502bf8cbae702de0568d7', -1, 1730416607, 1730416607, '12de77b1', 20, 0, 0)

Line : 195
File : sessions.php