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 ('a21be6ab1f65878a18db2b0f5b5e9599', -1, 1750010298, 1750010298, 'd849d8e3', -9, 0, 0)

Line : 190
File : sessions.php