For anyone who can’t get the categories page to work, it’s because the GQL query in the walk-through is wrong. Change it to:
query Categories($id: ID!){
category(id: $id) {
data {
id
attributes {
name
articles {
data {
id
attributes {
title
content
image {
data {
attributes {
url
}
}
}
category {
data {
id
attributes {
name
}
}
}
}
}
}
}
}
}
}