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 ('f8dde30dd759b4a4dd84712b1b979ee5', -1, 1714673881, 1714673881, '1274086e', 18, 0)

Line : 158
File : sessions.php