Weird postion_std[1] value in global_localization script

Hi everyone,
I am trying to use gnss with zed x to have a good localization. It sorts of work but i have a very high position std [1] value (e+19).
Is it a known problem or am i doing something wrong using the gps?

Hello @Vittoriocava,
Could you tell me more about your issue ? What is your positional tracking mode ? What is the covariance ingested in your GNSS data ?

Regards,
Tanguy