Solr instance throwing 404

[himadric]

HTTP ERROR 404 javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
URI: /solr/
STATUS: 404
MESSAGE: javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
SERVLET: default
CAUSED BY: javax.servlet.ServletException: javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.
CAUSED BY: javax.servlet.UnavailableException: Error processing the request. CoreContainer is either not initialized or shutting down.