AbstractController::DoubleRenderError (Render and/or redirect were called multiple times in this action

I've tried suggested different options in different tickets but nothing worked out me and getting this error

AbstractController::DoubleRenderError (Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".)

Can you please let me know what is wrong in this code

def show
es = @external_search

if es.search_type == 'internal' && ['json','xml'].include?(params[:format])
  rs = @external_search.resume_search
  smws = rs.connection.daxtra_smws
  dax_xml_resp = RestClient.post(smws.hostaddress__c + 'ws/dispatch',es.request_input,{:content_type => 'text/xml',  :accept => 'application/xml', :timeout=> 90})

  cIds = []
  cHash = Hash.new
  results = []

  search_results = process_results(dax_xml_resp)
  cIds = cIds.concat(search_results[:candidate_ids]).uniq
  cHash = cHash.merge(search_results[:hash])
  results = results.concat(search_results[:results]).uniq unless search_results[:results].nil?
  if(!es.match_vacancy_id.blank?)
    match_results = search_results
  end
  #if !es.match_vacancy_id.nil?
    #match_results = process_results(es.daxtra_match_vacancy[:response].body) rescue nil
    #unless match_results.nil?
      #cIds = cIds.concat(match_results[:candidate_ids]).uniq
      #cHash = cHash.merge(match_results[:hash])
      #results = results.concat(match_results[:results]).uniq unless match_results[:results].nil?
    #end
  #end

  resume_results = []
  fields_needed = []

  if !es.fields_to_select.blank?
    fields_needed = ['Id','TR1__External_Candidate_Id__c']
    fields_needed.push(es.fields_to_select.to_s.split(','))
  end


  unless results.nil?
    tr_contacts = []
    cIds.in_groups_of(1000){|group|
      processed_group = group.compact.reject(&:blank?)
      #tr_contacts += rs.connection.soap(rs.session_id).find_where('Contact', TR1__External_Candidate_Id__c: processed_group, ["Id", "FirstName", "CreatedBy"]).records

      if !fields_needed.blank?
        tr_contacts += rs.connection.soap(rs.session_id).find_where('Contact', {'TR1__External_Candidate_Id__c' => processed_group} , fields_needed.uniq)
        else
        tr_contacts += rs.connection.soap(rs.session_id).find_where('Contact', {'TR1__External_Candidate_Id__c' => processed_group})
      end
    }

    tr_contacts.each {|x|
      cHash[x.TR1__External_Candidate_Id__c]["Result"]["Score"] =  "#{cHash[x.TR1__External_Candidate_Id__c]["Result"]["Score"].to_i.round}%"
      cHash[x.TR1__External_Candidate_Id__c]["Result"]["badges"] =  [{:name => 'match', :text_color => 'blue', :color => 'grey'}] if !match_results.nil? && match_results[:candidate_ids].include?(x.TR1__External_Candidate_Id__c)
      resume_result = Hash["tr-object" => x.to_hash, "match-attributes" => cHash[x.TR1__External_Candidate_Id__c]["Result"].merge({"daxtra" => cHash[x.TR1__External_Candidate_Id__c]["Result"]})]
      resume_results << resume_result
      }
  end


  if resume_results.blank?
      es.status_line1 = "<strong>#{es.name}</strong>"
      es.retry = 0
      es.result_count = 0
    else
      es.status_line1 = "<strong title='#{resume_results.size} Result(s)'>#{es.name}</strong>"
      es.result_count = resume_results.size
      es.retry = 0
  end
  es.status_line2 = "<div title='[Ref:#{es.id}] #{es.message}'>Status: <strong>Ready</strong></div>"

  #h = Hash["a" => 100, "contact-array" => ca]
  response_hash = {:ResumeSearch=>{:Status=>{:Code=>"100", :Description=>"OK"}, :data=>{:result=> resume_results}}}

  #rs.connection.soap(rs.session_id).update('TR1__ResumeSearch__c', Id: rs.id, TR1__result_url__c: request.fullpath) #TakingTooMuchTime

  respond_to do |format|
    format.html { render :text => parsed_xml }
    #format.html { render :text => h.to_json }
    format.xml { 
      store_return_to
      render :xml => parsed_xml }
    format.json { 
      store_return_to
      render json: response_hash.to_json }
  end

end

 if es.search_type == 'external' && ['json','xml'].include?(params[:format])

  url = "https://#{es.host}/jwb/dispatch?db=#{es.database}&handle=#{es.request_id}&action=search_results"
  ext_search = RestClient.get(url, :timeout => REST_TIMEOUT)
  response = JSON.parse(ext_search)
  plain = Base64.decode64(response['results'])
  dresjson = Hash.from_xml(plain)
  json_out = dresjson.to_json
  if JSON.parse(json_out)['ZZ']['cv_entry'].class == Hash
    new_json = car = {:ZZ => {:cv_entry => [JSON.parse(json_out)['ZZ']['cv_entry']]} }
    json_out = new_json.to_json
  end
  result_count = JSON.parse(json_out)['ZZ']['cv_entry'].size  unless json_out.blank? #rescue nil

  es.status_line2 = "<div title='#{es.message}'>Status: <strong>Ready</strong></div>"

  if !result_count.nil?
    es.status_line1 = "<strong title='#{es.name} - #{result_count} Result(s)'>#{es.name}</strong>"
    es.result_count = result_count
  end

  es.status_line2 = "<div title='[Ref:#{es.id}] #{es.message}'>Status: <strong>Ready</strong></div>"
  respond_to do |format|
    #format.html { render :text => response }
    #format.html { render :text => tr_contacts }
    format.xml { render :xml => plain }
    format.json { render json: json_out }
  end
 end
 es.save
 es.to_intercom

end

Thanks