Missing workspace while running

Hi, I have a test case running on the agents but came out missing workspace error. I can confirm this is not deleted manually… Just wonder why this happens occasionally…

16:35:48  this case current IOPS count 765.00  /s write data 0xe131cb48         * 512  current speed is 0.00  M/s   this case current read data 0xdeb4fe18         * 512   current speed is 95.55 M/s   take time 11.00 
16:35:48  this case current IOPS count 567.87  /s write data 0xe131cb48         * 512  current speed is 0.00  M/s   this case current read data 0xded64418         * 512   current speed is 70.93 M/s   take time 15.00 
16:40:10  [Pipeline] echo
16:40:10  Case Failed
16:40:10  [Pipeline] echo
16:40:10  hudson.AbortException: missing workspace /home/tcnsh/jenkins_workspace/workspace/asic-simulator-samanea-daily on Asic-Simulator-112.73
16:40:10  [Pipeline] }
16:40:10  [Pipeline] // node
16:40:10  [Pipeline] echo
16:40:10  hudson.AbortException: missing workspace /home/tcnsh/jenkins_workspace/workspace/asic-simulator-samanea-daily on Asic-Simulator-112.73