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 ('78808eba5f546ce0353bbdf70d3237b1', -1, 1715308456, 1715308456, '031677fb', -4, 0, 0)

Line : 189
File : sessions.php