2532976 - SUM launch fails with "Timed Out" error in browser

You launch SUM in browser but it fails to launch after "Timed Out" error.

You can see further issue in sapstartsrv.log

    ============

    [Thr 2315] *** ERROR => No operation with ID 59A4083C60AA13D0E10080000AFC1667 found [OperationPlu 281]
    [Thr 2315] *** ERROR => Error: sock 24; error 79 (Connection refused)
    (79: Connection refused) [sixx.cpp     125]
    [Thr 2315] *** ERROR => Connection failed [Communicatio 206]

     '''''''''

     ''''''''''

     [Thr 4117] Tue Aug 29 12:26:10 2017
     [Thr 4117] *** ERROR => GSOAPHTTPRequest::Parse failed [GSOAPHTTPMes 194]

     [Thr 4118] Tue Aug 29 12:26:30 2017
     [Thr 4118] *** ERROR => GSOAPHTTPRequest::Parse failed [GSOAPHTTPMes 194]

     [Thr 3602] Tue Aug 29 12:27:07 2017
     [Thr 3602] ***LOG Q0I=> NiIRead: P=10.251.253.2:64769; L=???: recv (73: Connection reset by peer) [nixxi.cpp 5088]
     [Thr 3602] *** ERROR => NiIRead: SiRecv failed for hdl 49/sock 29
     (SI_ECONN_BROKEN/73; I4; ST; P=10.251.253.2:64769; L=???) [nixxi.cpp    5088]
      [Thr 2831] ***LOG Q0I=> NiIWrite: P=10.251.253.2:64767; L=???: send (32: Broken pipe) [nixxi.cpp 4605]
     [Thr 2831] *** ERROR => NiIWrite: SiSend failed for hdl 25/sock 27

    =============

Linux

SUM,URL,TIME OUT,sapstartsrv,sock 27,Connection,GSOAPHTTPRequest,SI_ECONN_BROKEN , KBA , BC-UPG-PRP , Upgrade Preparation , Problem