Transport error encountered in completing User Task

Hi All,
While completing a user task from MWS I am getting the below error.Task is getting completed(means no longer in user or custom task inbox),but process is not getting completed.

Overview:Task is getting assigned to a group of user at design time.Now when user from that group is trying to complete the task,getting this error.

log4j:message</log4j:message>
log4j:NDC</log4j:NDC>
log4j:throwable<![CDATA[com.wm.app.b2b.client.ServiceException: [ISC.0036.9107] Transport error encountered

Complete error message is there in the attachment.

We are using webMethod version 8.2 with Oracle database in windows OS
MWS_ErrorLog.txt (25.8 KB)

Hi Baharul,

The target wM IS server had HTTP & HTTPS Proxy Server settings
established which had to be updated to include Proxy Bypass Proxy entries
for the wM Manager server host.

Thanks
Regards,
Bhanu

Thanks Bhanu for your suggestion.
May be this is due to IS connectivity error.Is was not responding and after server restart it is working correctly.