phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO ceburekas_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin, is_robot) VALUES ('8581d3e547d45b0b06f39d5d6b961d3a', -1, 1714141195, 1714141195, '1275b796', -6, 0, '0', '0')

Line : 175
File : sessions.php