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 ('16082620d427198d4d0f5091ed7b952e', -1, 1713467840, 1713467840, '030f1242', 0, 0, 0)

Line : 187
File : sessions.php