java.lang.IllegalArgumentException: Map has no value for 'name'

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java.lang.IllegalArgumentException: Map has no value for 'name'	at org.springframework.web.util.UriComponents$MapTemplateVariables.getValue(UriComponents.java:306)	at org.springframework.web.util.UriComponents.expandUriComponent(UriComponents.java:230)	at org.springframework.web.util.HierarchicalUriComponents.expandQueryParams(HierarchicalUriComponents.java:343)	at org.springframework.web.util.HierarchicalUriComponents.expandInternal(HierarchicalUriComponents.java:329)	at org.springframework.web.util.HierarchicalUriComponents.expandInternal(HierarchicalUriComponents.java:47)	at org.springframework.web.util.UriComponents.expand(UriComponents.java:152)	at org.springframework.web.util.UriTemplate.expand(UriTemplate.java:97)	at org.springframework.cloud.netflix.zuul.filters.ProxyRequestHelper.getQueryString(ProxyRequestHelper.java:274)