Cannot fetch the entity set in browser

Hi Experts,

i am having a service ZGL_FG_LOC_DETAILS_CONS and when i explore it the metadata and entity set is successfully giving output with http response 200. then i copied the metadata link in the browser which is working fine, but the entity set link which is giving the error 500. can any one else gilve me a solution to solve this. Awaiting for your reply, Thanks.