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) VALUES ('e387d9ac3c2a9fdbe0a97998d6d27183', -1, 1714711977, 1714711977, '0395fb9a', 15, 0)

Line : 158
File : sessions.php