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 ('8d1a68d72f2f8e4e61c89d650cbc2e13', -1, 1752692657, 1752692657, 'd849d8fc', 1, 0, 0)

Line : 189
File : sessions.php