Getting 502 Bad Gateway error while trying to upload packes via curl from Jenkins

Hi All,

Am trying to implement the Continuous integration from Jenkins and while trying to install the package to the package manger(AEM 6.4) via the below command, we are getting 502 - bad gateway error.

Command:

curl -u ****:**** -F package=@/var/jenkins_home/workspace/package.zip https://www.site.com/crx/packmgr/service/.json/?cmd=upload -F force=true

Response:

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>502 Bad Gateway</title>
</head><body>
<h1>Bad Gateway</h1>
<p>The proxy server received an invalid
response from an upstream server.<br />
</p>
</body></html>

Do i need to tweak something in the  Dispatcher configuration? Can someone please help me on how to approach this issue?