OpenApi error in Swagger

I'm trying to create an SDK from [Swagger](https://editor.swagger.io/).

I got this error:

```
Semantic error at paths./assets/{assetId}
Declared path parameter "assetId" needs to be defined as a path parameter at either the path or operation level
Jump to line 309
Semantic error at paths./assets/{assetId}/metadata
Declared path parameter "assetId" needs to be defined as a path parameter at either the path or operation level
Jump to line 496
Semantic error at components.schemas.PageManipulationInternal.properties.pageActions.items
`items` must be an object
Jump to line 7298
Structural error at components.schemas.PageManipulationInternal.properties.pageActions.items
should be object
Jump to line 7298
Semantic error at components.schemas.PageManipulationExternal.properties.params.properties.pageActions.items
`items` must be an object
Jump to line 7343
Structural error at components.schemas.PageManipulationExternal.properties.params.properties.pageActions.items
should be object
Jump to line 7343
Structural error at components.schemas.responseAsset.properties.assetID.required
should be an array of property names required within an object schema
Jump to line 9096
Structural error at components.schemas.responseAssetZip.properties.assetID.required
should be an array of property names required within an object schema
Jump to line 9126
Semantic error at components.schemas.doneWithMultipleAsset.properties.assetList.items
`items` must be an object
Jump to line 9152
Structural error at components.schemas.doneWithMultipleAsset.properties.assetList.items
should be object
Jump to line 9152
Semantic error at components.schemas.ExtractPDFDone.oneOf.1.$ref
$refs must reference a valid location in the document
Jump to line 9617
```

Open the API definition in Swagger Editor and inspect paths./assets/{assetId}, paths./assets/{assetId}/metadata, and the schemas at the reported line numbers. Check the path parameters, items, required arrays, and ExtractPDFDone.oneOf.1.$ref against OpenAPI validation, then confirm the document validates and SDK generation proceeds without these errors.

Written by the indexing model from the issue text.