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Fix NoMethodError in LinkTokenCreateRequest#list_invalid_properties #419

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Fix NoMethodError in LinkTokenCreateRequest#list_invalid_properties #419

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@rubendinho rubendinho commented Mar 22, 2022 •
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When supplied country_codes of nil, the list_invalid_properties will raise NoMethodError because #length is being called on nil.

request = ::Plaid::LinkTokenCreateRequest.new(products: ['transactions'])

request.valid? # => false

request.list_invalid_properties # => NoMethodError: undefined method `length' for nil:NilClass

@rubendinho
Fix NoMethodError
5f12741 
When `country_codes` is nil, the `list_invalid_properties` method will error with a NoMethodError since you cannot call `#length` on `nil`.

```
request = ::Plaid::LinkTokenCreateRequest.new(products: ['transactions'])
request.valid? # false
request.list_invalid_properties # NoMethodError: undefined method `length' for nil:NilClass
```
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