Failed creating formpost data

Dear All,

I am getting this error when am trying to install package. The package manager is not loading and in launch pad the error is

[ERROR] Request to http://localhost:4503/crx/packmgr/service.jsp failed, respons

e=Unauthorized

When I tried to execute the command,

curl -u admin:admin -F file=@publisher_package.zip -F name=publisher_pack

agename http://localhost:4503/crx/packmgr/service.jsp

The response is:

curl: (26) failed creating formpost data.

Any help would be much appreciated.

Regards