PI 7.1, RWB Performance monitoring error

Dear experts,

     We are using PI 7.1 version SP5, recently service pack updated to 12 by BASIS. Whenever I am trying to check the performance monitoring in RWB. getting an error saying below :

   " 3 Message(s) : Connection to Integration Server Lost - Error class com.sap.aii.proxy.framework.core.BaseProxyException: Concurrent call in detected. Connection [31] currently used in another thread:HTTP Worker [@1221137961] [142] in execute since 490394 ms.Current thread:HTTP Worker [@2014230334] [143], action: execute., error key: JCO_ERROR_CONCURRENT_CALL - No component names available from Integration Server "

     The issue happening in PROD environment and bit urgent.

     Please suggest you valuable thoughts to resolve the above.

Thanks

Ravi