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 ('08d420bc6b0c03b5cf9d7d6b362299a0', -1, 1713912359, 1713912359, '038d29bb', 3, 0, 0)

Line : 187
File : sessions.php