writing image to excel with xlsxwriter returns " workbook not callable"

Question

Using the first answer to the following link Python: Writing Images and dataframes to the same excel file as a guide:

I have the following script in which I like to write a dataframe object to one sheet and a bunch of images to another sheet.

class name():

 def some_func(self):
     self.writer = pd.ExcelWriter('Name1',engine='xlsxwriter')
     return
 
 def write_excel(self):
     self.df.to_excel(self.writer,sheet_name='Name',index=False, header=False)
     self.writer.save()   
    return

def write_excel(self):
    self.workbook = self.writer.book('Name1')
    self.worksheet = self.writer.sheets(name='images')
    images=[]
    do some stuff
    for i,image in enumerate(images):
        self.worksheet.insert_image('D1',0,y_postn[i],image)  
    self.writer.save()   
    return

It returns the following error

'Workbook' object is not callable

Not sure how to interpret this error or fix it?...