diff --git a/app/models/venue_management_contract.rb b/app/models/venue_management_contract.rb
index af1fdac..3f0d680 100644
--- a/app/models/venue_management_contract.rb
+++ b/app/models/venue_management_contract.rb
@@ -55,7 +55,7 @@ class VenueManagementContract
   belongs_to :venue_management_inviting
   include VenueLinkFile
   before_save do
-    org_contract = VenueManagementContract.find(self.id)
+    org_contract = VenueManagementContract.find(self.id) rescue nil
     inviting = VenueManagementInviting.find(self.venue_management_inviting_id) rescue nil
     if !inviting.nil?
       %i(case_no publish_times start_date end_date close_date bid_date evaluation_date contractor_manager bid_result details).each do |attr_|
@@ -65,7 +65,7 @@ class VenueManagementContract
       self[:case_no] = nil
     end
     update_flag = true
-    if org_contract.venue_management_inviting_id == self.venue_management_inviting_id
+    if !org_contract.nil? && org_contract.venue_management_inviting_id == self.venue_management_inviting_id
       %i(early_rent operation_rent royalty house_tax_payer land_tax_payer).each do |attr_|
         if self[attr_] != (inviting.send(attr_) rescue nil)
           update_flag = false