elasticsearch nested facets problem

mapping.json

{
   "user":{
      "properties":{
         "profile_completeness":{ "type":"double" },
         "created_at":{ "format":"dateOptionalTime", "type":"date" },
         "user_type":{ "type":"string" },
         "professions":{
            "type":"nested",
            "properties":{
               "to":{ "format":"dateOptionalTime", "type":"date" },
               "_id":{ "type":"string" },
               "description":{ "type":"string" },
               "department":{ "type":"string" },
               "designation":{ "type":"string" },
               "current":{ "type":"boolean" },
               "from":{ "format":"dateOptionalTime", "type":"date" },
               "company_site":{ "type":"string" },
               "location_id":{ "type":"string" },
               "company":{
                  "type":"multi_field",
                  "fields":{
                     "lower":{ "include_in_all":false, "analyzer":"lower_keyword", "boost":20.0, "type":"string" },
                     "company":{ "analyzer":"name_analyzer", "boost":10.0, "type":"string" },
                     "untouched":{ "include_in_all":false, "index":"not_analyzed", "store":"yes", "type":"string" }
                  }
               }
            }
         },
         "college_id":{ "type":"string" },
         "invitation_token":{ "type":"string" },
         "alma_info":{
            "properties":{
               "course":{ "index":"not_analyzed", "store":"yes", "type":"string" },
               "rollno":{ "type":"string" },
               "_id":{ "type":"string" },
               "department":{ "type":"string" },
               "designation":{ "type":"string" },
               "branch":{ "index":"not_analyzed", "type":"string" },
               "discipline":{ "index":"not_analyzed", "store":"yes", "type":"string" },
               "joining_year":{ "type":"integer" },
               "graduation_year":{ "type":"integer" }
            }
         },
         "personal_info":{
            "properties":{
               "title":{ "index":"no", "type":"string" },
               "lname":{ "type":"string" },
               "anniversary":{ "format":"dateOptionalTime", "type":"date" },
               "married":{ "type":"boolean" },
               "_id":{ "type":"string" },
               "dob":{ "format":"dateOptionalTime", "type":"date" },
               "gender":{ "type":"string" },
               "fname":{ "type":"string" },
               "name":{
                  "type":"multi_field",
                  "fields":{
                     "lower":{ "include_in_all":false, "analyzer":"lower_keyword", "boost":20.0, "type":"string" },
                     "name":{ "store":"yes", "analyzer":"name_analyzer", "boost":10.0, "type":"string" },
                     "untouched":{ "include_in_all":false, "index":"not_analyzed", "store":"yes", "type":"string" }
                  }
               }
            }
         }
      }
   }
}

query1.curl

curl -X GET "http://localhost:9200/development_users/user/_search?pretty=true" -d '
{
  "query":{
    "bool":{
      "must":[
        {
          "term":{
            "college_id":"4eb8f0f575f38e461700000c"
          }
        },
        {
          "terms":{
            "user_type":[
              "alumni",
              "faculty",
              "student"
            ]
          }
        }
      ]
    }
  },
  "sort":[
    {
      "profile_completeness":"desc"
    },
    {
      "created_at":"asc"
    }
  ],
  "facets":{
    "companies":{
      "terms":{
        "field":"professions.company",
        "size":50,
        "all_terms":false,
        "nested":"professions"
      }
    }
  },
  "size":0,
  "from":0
}
'

# output
{
  "took" : 8,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "failed" : 0
  },
  "hits" : {
    "total" : 1483,
    "max_score" : null,
    "hits" : [ ]
  },
  "facets" : {
    "companies" : {
      "_type" : "terms",
      "missing" : 1483,
      "total" : 0,
      "other" : 0,
      "terms" : [ ]
    }
  }
}

query2.curl

curl -X GET "http://localhost:9200/development_users/user/_search?pretty=true" -d '
{
   "query":{
      "bool":{
         "must":[
            {
               "term":{
                  "college_id":"4eb8f0f575f38e461700000c"
               }
            },
            {
               "terms":{
                  "user_type":[
                     "alumni",
                     "faculty",
                     "student"
                  ]
               }
            }
         ]
      },
      "nested":{
         "path":"professions",
         "_scope":"company",
         "query":{
            "bool":{
               "must":[
                  {
                     "term":{
                        "professions.company":"adobe"
                     }
                  }
               ]
            }
         }
      }
   },
   "sort":[
      {
         "profile_completeness":"desc"
      },
      {
         "created_at":"asc"
      }
   ],
   "facets":{
      "companies":{
         "terms":{
            "field":"professions.company",
            "size":50,
            "all_terms":false,
            "scope":"company"
         }
      }
   },
   "size":0,
   "from":0
}
'

#output 
{
  "error" : "SearchPhaseExecutionException[Failed to execute phase [query_fetch], total failure; shardFailures {[dp29GzyfRnqaYyd2SNqQow][development_users][0]: SearchParseException[[development_users][0]: query[+college_id:4eb8f0f575f38e461700000c +((user_type:alumni user_type:faculty user_type:student)~1)],from[-1],size[-1]: Parse Failure [Failed to parse source [{\"query\":{\"bool\":{\"must\":[{\"term\":{\"college_id\":\"4eb8f0f575f38e461700000c\"}},{\"terms\":{\"user_type\":[\"alumni\",\"faculty\",\"student\"]}}]},\"nested\":{\"path\":\"professions\",\"_scope\":\"company\",\"query\":{\"bool\":{\"must\":[{\"term\":{\"professions.company\":\"adobe\"}}]}}}},\"sort\":[{\"profile_completeness\":\"desc\"},{\"created_at\":\"asc\"}],\"facets\":{\"companies\":{\"terms\":{\"field\":\"professions.company\",\"size\":50,\"all_terms\":false,\"scope\":\"company\"}}},\"size\":0,\"from\":0}]]]; nested: SearchParseException[[development_users][0]: query[+college_id:4eb8f0f575f38e461700000c +((user_type:alumni user_type:faculty user_type:student)~1)],from[-1],size[-1]: Parse Failure [No parser for element [path]]]; }]",
  "status" : 500
}

sample_document.json

{
   "_id":"4eb8f6a475f38e4bc100172a",
   "_type":"User",
   "alma_info":{
      "_id":"4eb8f6a475f38e4bc1001729",
      "branch":"ECE",
      "course":"M.Tech.",
      "graduation_year":2011,
      "joining_year":2009,
      "rollno":"MV9548-6629",
      "discipline":"M.Tech. - ECE"
   },
   "college_id":"4eb8f0f575f38e461700000c",
   "experience":2.1416666666666666,
   "personal_info":{
      "_id":"4eb8f6a475f38e4bc1001728",
      "anniversary":"2005-08-26T00:00:00+05:30",
      "dob":"1981-03-20T00:00:00+05:30",
      "fname":"Ethyl",
      "gender":"M",
      "lname":"Collier",
      "married":true,
      "title":"Mrs.",
      "name":"Mrs. Ethyl Collier",
      "hometown_string":null,
      "current_city_string":null
   },
   "professions":[
      {
         "current":true,
         "company":"Alma Connect",
         "from":"2011-01-31T18:30:00Z",
         "to":null,
         "designation":"CoFounder",
         "department":"Technology",
         "company_site":"http://www.almaconnect.com/",
         "location_id":"7279746",
         "description":"",
         "_id":"4ebb814b75f38e289900002f"
      },
      {
         "current":false,
         "company":"Joshlabs",
         "from":"2009-09-30T18:30:00Z",
         "to":"2011-01-31T18:30:00Z",
         "designation":"Senior Developer",
         "department":"Technology",
         "company_site":"http://joshlabs.in/",
         "location_id":"1270642",
         "description":"",
         "_id":"4ebb814b75f38e2899000030"
      }
   ],
   "profile_completeness":26.136363636363637,
   "user_type":"student"
}