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 ('dcffabc1d24b173e6d6abac8213f28dc', -1, 1730427991, 1730427991, '038d0ce0', -1, 0, 0)

Line : 195
File : sessions.php