Budget App transfer method not working not sure why

class Category:
    status= False
    name = ''
    balance = 0
    ledger = []
    
    def __init__(self, name):
        self.name=name
        self.ledger=[]

    def deposit (self,amount, description=''):
        self.ledger.append({'amount': float(amount), 'description': description})
      
    def withdraw (self, amount, description=''):
     
        self.check_funds(float(amount))
        if self.status == True:
            self.ledger.append({'amount': -float(amount), 'description':description})
            self.balance = self.balance - amount
            return True
        else:
            return False
                
    def get_balance (self):
        self.balance=0
        
        for item in self.ledger:
            self.balance = self.balance+item['amount']
        return self.balance
    
    def transfer (self, amount, diff_class):
        self.check_funds(amount)
        if self.status == True:
            self.withdraw(amount, 'Transfer to '+ diff_class)
            diff_class.deposit(amount, 'Transer from '+ self.name) 
            return True
        else:
            return False
    
    def check_funds (self, amount):
        self.get_balance()
        if amount > self.balance:
            self.status=False
            return self.status
        else:
            self.status=True
            return self.status
        
    def __repr__(self):
        return "category()"
    def __str__(self):
        x=int((30-len(self.name))/2)
        i=0
        formatted= list ()
        for item in self.ledger:
            desc_ws= 23-len(item['description'])
            amount_ws= 7 - len(str('%.2f' % item['amount']))
            if desc_ws<=0:
                y=item['description'][:23] + ' '+ ' '*amount_ws + str('%.2f' % item['amount'] + '\n')
                formatted.append(y)     
            else:
                y=item['description']+' '*desc_ws+ ' ' + ' '*amount_ws + str('%.2f' % item['amount'] + '\n')
                formatted.append(y)
                                                              
        combined_formatted= ''.join(formatted)                                                      
        return '*'*x + self.name + '*'*x+ '\n' + combined_formatted + 'Total:  ' + str(self.balance)

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