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 ('f7b86aba04bd44f24e99a7fc5d2df2cf', -1, 1714352955, 1714352955, '12e095f2', 17, 0)

Line : 158
File : sessions.php