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 ('beb9b492540afdd24a52fe5908ca48c2', -1, 1713519344, 1713519344, '0d3b7aa2', -9, 0, 0)

Line : 187
File : sessions.php