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, session_admin) VALUES ('ed83fb02bb71d2a9045d9903d5f5efb3', -1, 1713510261, 1713510261, '12bfabeb', 4, 0, 0)

Line : 187
File : sessions.php