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 ('8134ec642b97f14a63dd755cb91b69ab', -1, 1730431876, 1730431876, '038a224b', -1, 0, 0)

Line : 195
File : sessions.php