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 ('23bce92d2d88f73e83cd691ce2758788', -1, 1713495337, 1713495337, '0393cd9a', -10, 0, 0)

Line : 187
File : sessions.php