Fix deprecation warning

app/models/lndhub_user.rb

@@ -10,18 +10,18 @@ class LndhubUser < LndhubBase
                     foreign_key: "login"
 
   def balance
-    accounts.current.first.ledgers.sum("account_ledgers.amount").to_i.abs
+    accounts.current.order(:id).first.ledgers.sum("account_ledgers.amount").to_i.abs
   end
 
   def sum_outgoing
-    accounts.outgoing.first.ledgers.sum("account_ledgers.amount").to_i.abs
+    accounts.outgoing.order(:id).first.ledgers.sum("account_ledgers.amount").to_i.abs
   end
 
   def sum_incoming
-    accounts.incoming.first.ledgers.sum("account_ledgers.amount").to_i.abs
+    accounts.incoming.order(:id).first.ledgers.sum("account_ledgers.amount").to_i.abs
   end
 
   def sum_fees
-    accounts.fees.first.ledgers.sum("account_ledgers.amount").to_i.abs
+    accounts.fees.order(:id).first.ledgers.sum("account_ledgers.amount").to_i.abs
   end
 end