Please any suggestions, I can´t retrieve the complete board data using API v2 from Power BI

Sorry I posted beforem but, it not works yet. Here the query :

Hi,

I´m trying to get complete values from a board (using API v2), o get message that “I was disconnected”, moving to API Playground using the code bellow (i got the message: “SyntaxError: Unexpected token < in JSON at position 0”, can you help me?

query {
me {
name
}

boards(ids:[657075277]) {
name

columns {
title
id
type
}

groups {
title
id
}

items {
name
group {
id
}

column_values {
id
value
text
}
}
}
}