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 ('4b48368ab02422f2b16e0b3fc6c42a06', -1, 1714372783, 1714372783, '03913aa9', 15, 0)

Line : 158
File : sessions.php