corrected update loan

app/models/loan.py

@@ -88,7 +88,10 @@ class Loan(db.Model):
             'loanDate': self.created_at.isoformat() if self.created_at else None,
             'disburseDate': self.disburse_date.isoformat() if self.disburse_date else None,
             'disburseVerify': self.disburse_verify.isoformat() if self.disburse_verify else None,
-            'reference': self.reference
+            'reference': self.reference,
+            'balance': self.balance,
+            'tenor': self.tenor,
+            
         }
 
     @classmethod
@@ -293,7 +296,7 @@ class Loan(db.Model):
                 raise ValueError("Repayment amount exceeds current loan balance.")
 
             # Deduct the amount from the current balance
-            loan.balance -= amount_collected
+            loan.balance -= float(amount_collected)
             loan.updated_at = datetime.now(timezone.utc)
             db.session.commit()