Fix: Error on adjustment creation without member

app/api/v2/admin/adjustments.rb

@@ -132,10 +132,12 @@ class Adjustments < Grape::API
             if adjustment.amount < 0
               account_number_hash = ::Operations.split_account_number(account_number: adjustment.receiving_account_number)
               member = Member.find_by(uid: account_number_hash[:member_uid])
-              balance = member.get_account(account_number_hash[:currency_id]).balance
+              if member.present?
+                balance = member.get_account(account_number_hash[:currency_id]).balance
 
-              if adjustment.amount.abs() > balance
-                error!({ errors: ['admin.adjustment.user_insufficient_balance'] }, 422)
+                if adjustment.amount.abs() > balance
+                  error!({ errors: ['admin.adjustment.user_insufficient_balance'] }, 422)
+                end
               end
             end
 

spec/api/v2/admin/adjustments_spec.rb

@@ -309,6 +309,22 @@
       }.not_to change { member.get_account(adjustment.currency).balance }
     end
 
+    context 'adjustment without member' do
+      let!(:adjustment) { create(:adjustment, currency_id: 'btc', receiving_account_number: "btc-402-") }
+
+      it 'should accept adjustment' do
+        adjustment.update(amount: -10000000.0)
+
+        expect {
+          api_post '/api/v2/admin/adjustments/action', token: token, params: { id: adjustment.id, action: :accept }
+        }.to change { adjustment.reload.state }.to('accepted')
+        .and change { Operations::Asset.count }.by(1)
+        .and change { Operations::Expense.count }.by(1)
+
+        expect(response).to be_successful
+      end
+    end
+
     context 'already accepted' do
       let!(:adjustment) { create(:adjustment, currency_id: 'btc', receiving_account_number: "btc-202-#{member.uid}").tap { |a| a.accept!(validator: member) } }