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 ('6e3f8f3e6d6d7c3ca62e79406e9ccb5f', -1, 1715342717, 1715342717, '127551f0', -4, 0, 0)

Line : 189
File : sessions.php