SCDF dashboard is not accessible

Products

• Support Only for Spring

Issue/Introduction

SCDF dashboard is not accessible showing following error.

Environment

Product Version: 1.10

Resolution

Check the SCDF broker app logs in org system, space p-dataflow. If it's full of exception as the following 
 

   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 2022-12-12 10:31:31.987 ERROR 15 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is io.netty.handler.codec.CorruptedFrameException: invalid JSON received at byte position 0: 41504920646f776e20666f72206d61696e74656e616e6365] with root cause
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT io.netty.handler.codec.CorruptedFrameException: invalid JSON received at byte position 0: 41504920646f776e20666f72206d61696e74656e616e6365
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 	at io.netty.handler.codec.json.JsonObjectDecoder.decode(JsonObjectDecoder.java:175) ~[netty-codec-4.1.45.Final.jar!/:4.1.45.Final]
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT Assembly trace from producer [reactor.core.publisher.FluxMap] :
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 	reactor.core.publisher.Flux.map(Flux.java:5936)
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 	reactor.netty.ReactorNetty.publisherOrScalarMap(ReactorNetty.java:464)
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT Error has been observed at the following site(s):
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 	|_                         Flux.map ⇢ at reactor.netty.ReactorNetty.publisherOrScalarMap(ReactorNetty.java:464)
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 	|_                   Flux.doFinally ⇢ at org.cloudfoundry.reactor.util.Operator$ResponseReceiver.lambda$parseBodyToFlux$4(Operator.java:171)
   2022-12-12T16:01:32.02+0530 [APP/PROC/WEB/0] OUT 	
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restart the broker app and that should solve the issue.