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 ('71af2d2c8001d604d76202da4f37208f', -1, 1730416633, 1730416633, '038d0ce0', -1280, 0, 0)

Line : 195
File : sessions.php