{"errors":[{"message":"Value is not set for non-nullable variable 'slug'","locations":[{"line":3,"column":21}],"extensions":{"path":["$slug","{slugs: $slug}","(filter: {slugs: $slug})","postCategories(filter: {slugs: $slug}, sort: {order: DESC}, pagination: {limit: $limit, offset: $offset}) { ... }","query getPostsByCategories($slug: String!, $limit: Int = 10, $offset: Int = 0) { ... }"],"code":"gql@5.8.5","specifiedBy":"https:\/\/spec.graphql.org\/draft\/#sec-All-Variable-Usages-are-Allowed"}}]}