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 ('b66bb3afd1d4991de70e2d57ec6f1daa', -1, 1714283928, 1714283928, '12dad108', -7, 0)

Line : 158
File : sessions.php