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 ('91c1dbc1c74a74a225dd0c47385a7f9b', -1, 1715294815, 1715294815, '12776b60', 0, 0, 0)

Line : 189
File : sessions.php