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 ('5a71193d53b024f02841d004f0508c09', -1, 1714604859, 1714604859, '340ef0b2', -4, 0)

Line : 158
File : sessions.php