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 ('500762a078df7c9549f503c5d90c5295', -1, 1713968611, 1713968611, '030fdbd9', -2, 0, 0)

Line : 187
File : sessions.php