Got Warnings for quasar 0.7.10

[linkerlin]

When I request : http://localhost:8080/api/client/data I got:

[quasar] WARNING: UnableToInstrumentException encountered when instrumenting org/springframework/http/client/InterceptingClientHttpRequest#(Lorg/springframework/http/client/ClientHttpRequestFactory;Ljava/util/List;Ljava/net/URI;Lorg/springframework/http/HttpMethod;)V: Unable to instrument org/springframework/http/client/InterceptingClientHttpRequest#(Lorg/springframework/http/client/ClientHttpRequestFactory;Ljava/util/List;Ljava/net/URI;Lorg/springframework/http/HttpMethod;)V because of special method [quasar] WARNING: UnableToInstrumentException encountered when instrumenting org/springframework/http/client/AbstractBufferingClientHttpRequest#()V: Unable to instrument org/springframework/http/client/AbstractBufferingClientHttpRequest#()V because of special method [quasar] WARNING: UnableToInstrumentException encountered when instrumenting org/springframework/http/client/AbstractClientHttpRequest#()V: Unable to instrument org/springframework/http/client/AbstractClientHttpRequest#()V because of special method [quasar] WARNING: UnableToInstrumentException encountered when instrumenting org/springframework/http/client/HttpComponentsClientHttpRequest#(Lorg/apache/http/client/HttpClient;Lorg/apache/http/client/methods/HttpUriRequest;Lorg/apache/http/protocol/HttpContext;)V: Unable to instrument org/springframework/http/client/HttpComponentsClientHttpRequest#(Lorg/apache/http/client/HttpClient;Lorg/apache/http/client/methods/HttpUriRequest;Lorg/apache/http/protocol/HttpContext;)V because of special method [quasar] WARNING: UnableToInstrumentException encountered when instrumenting org/springframework/http/client/BufferingClientHttpRequestWrapper#(Lorg/springframework/http/client/ClientHttpRequest;)V: Unable to instrument org/springframework/http/client/BufferingClientHttpRequestWrapper#(Lorg/springframework/http/client/ClientHttpRequest;)V because of special method