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 ('088807c5ec4f7ac33cb2dd472a9a37e1', -1, 1715067768, 1715067768, '12dc89a4', -7, 0, 0)

Line : 189
File : sessions.php