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 ('a0b54a6f1b4b9057b0b57ff5b7fd9269', -1, 1713579845, 1713579845, '0310458f', -7, 0, 0)

Line : 187
File : sessions.php