Exception in HttpClient

[rrayst]

"message": "Cannot throw exception because \"exception\" is null",
"stackTrace": {
"e0": "com.predic8.membrane.core.transport.http.HttpClient.call(HttpClient.java:378)",
"e1": "com.predic8.membrane.core.interceptor. HTTPClientInterceptor.handleRequest(HTTPClientInterceptor.java: 72)",
"e2": "com.predic8.membrane.core.interceptor.FlowController.invokeRequestHandlers(FlowController. java:81)".
"e3": "com.predic8.membrane.core.interceptor.UserFeatureInterceptor.handleRequest(UserFeatureInterceptor. java:37)".
"e4": "com.predicB.membrane.core.interceptor.FlowController.invokeRequestHandlers(FlowController.java:81)".
"e5": "com.predicB.membrane.core.transport.http.AbstractHttpHandler.invokeHandlers(AbstractHttpHandler.java:52)",
"e6": "com.predic8.membrane.core.transport.http.HttpServerHandler.process(HttpServerHandler.java:284)",
"e7": "com.predic8.membrane.core.transport.http.HttpServerHandler.processHttp1Request(HttpServerHandler.java:218)",
"e8": "com.predic8.membrane.core. transport.http.HttpServerHandler.processSingleRequest(HttpServerHandler.java:191)",
"e9": "com.predic8.membrane.core. transport.http.HttpServerHandler.run(HttpServerHandler.java:102)",
"e10": "java.base/java.vtil.concurrent. ThreadPoolExecutor.runWorker(ThreadPoolExecutor. java:1144)".
"e11": "java.base/java.util.concurrent. ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)".