phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7ca1051f35d82f36ee4ce16c8f40fe90', -1, 1715028764, 1715028764, '1276a662', -8, 0, 0)

Line : 189
File : sessions.php