UBE: Retrieve of UBE file failed. The file may not exist on Enterprise Server

Hello,

During the View output from the WSJ we faced this error "UBE: Retrieve of UBE file failed. The file may not exist on Enterprise Server". This is happening for the some report not for all report.

Here is the attached log file kindly find

03 Jun 2015 18:12:47,490 [WARN  ]  - [RUNTIME]         HTMLClientHandler:doService: Abnormal error: Silent post request cannnot be processed due to busy status

03 Jun 2015 18:19:07,502 [WARN  ] AR82962 - [RUNTIME]         Report Name :R42520 is submitted successfully on JDES123

03 Jun 2015 18:22:46,275 [SEVERE]  - [KERNEL]          *ERRROR* LaunchUBE: *ERRROR* LaunchUBE: Retrieve of UBE file failed.  The file may not exist on Enterprise Server. user:SK44340 Env:JDV910