Index not working showing error type as Crawler

HI Team,

We are not able to find and search the document in Search engine because of error type Crawler. Even after re-indexing all documents are going into error mode and none of the document is indexed.

Our Enterprise Portal Version is SAP EP 7.02 SP16

Please find the attached screen shot for your reference.

Image may be NSFW.
Clik here to view.

Looking forward to hear from you.

Thanks & Regards,

Rohit