java.lang.NullPointerException: null

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java.lang.NullPointerException: null
at org.springframework.cloud.sleuth.instrument.web.client.feign.TraceFeignRetryer.continueOrPropagate(TraceFeignRetryer.java:56)
at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:78)
at com.sun.proxy.$Proxy100.exp(Unknown Source)
at net.test.sleuth.controllers.SleuthTestController.notOk(SleuthTestController.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

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