We use web server plugin to communicate to the application server running on websphere 6.1.

Most of the http calls to the application work but there is one servlet that gets a http 500 response back and results in a "page cannot be displayed" message.

The plugin file looks fine. It has a few comments that we added but i dont think that will cause any problems.

The jsession also exists for the servlet call and it does find it based on review of the logs.

I need some guidance - I get this error in the http_plugin.log. please advise, thanks

000058fe ef8e5b90 - ERROR: ESI: esiResponseCreate: invalid Last-Modified header value: 0xffffffff