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 ('8dad62ec36a7da312afb652856be9c86', -1, 1713506248, 1713506248, '12e2bb18', -4, 0, 0)

Line : 187
File : sessions.php