old_contents: import requests
  import os.path
  from bs4 import BeautifulSoup
  
  from watcher.watcher import Watcher
  
  class PepperWatcher(Watcher):
      watcher_name = 'Pepper'
      filename = ''
      search_keyword = 'prijsfout'
  
      def generate_filename(self):
          self.filename = 'site_pepper_{0}.txt'.format(self.search_keyword)
  
      def parse_site(self):
          generate_filename()
          cookies = dict(sort_by="eyJpdiI6InhLQVwvVjdpV01Sblc5clZJV3FUT1FDdDIxdm1OUHRFM2V0SnBtSmhOK2ZBPSIsInZhbHVlIjoiU1RKV3EwSzM0Q0QwSitOUkwrVzVNZUpPeVBMbEhqWEVMcCtlbldiWm1FOD0iLCJtYWMiOiJlZTI3Yzc2MGU3YzEwZTg1NDRjMDVhMWU5ZGE0MDkwYzU3YTAxNWU0OWQyZWRlOTg5NmUxOTgzYzA4M2QxOGQ3In0=")
          result = requests.get("https://nl.pepper.com/search?q={0}".format(self.search_keyword), cookies=cookies)
          content = result.content
          soup = BeautifulSoup(content, 'html.parser')
          return soup.find_all('a', class_='thread-title-text', limit=1)[0].get_text()
  
      def check_price_error(self):
          articles = self.parse_site()
          message_text = 'PRIJSFOUT GEVONDEN OP PEPPER: {0}'.format(articles)
  
          if not os.path.isfile(self.filename):
              self.write_to_file(self.filename, articles)
              exit(0)
          else:
              with open(self.filename, 'r') as f:
                  file_content = f.read().replace('\n', '')
  
                  if file_content != articles:
                      self.send_telegram(self.watcher_name, message_text)
              self.write_to_file(self.filename, articles)
  
new_contents: import requests
  import os.path
  from bs4 import BeautifulSoup
  
  from watcher.watcher import Watcher
  
  class PepperWatcher(Watcher):
      watcher_name = 'Pepper'
      filename = ''
      search_keyword = 'prijsfout'
  
      def generate_filename(self):
          self.filename = 'site_pepper_{0}.txt'.format(self.search_keyword)
  
      def parse_site(self):
          self.generate_filename()
          cookies = dict(sort_by="eyJpdiI6InhLQVwvVjdpV01Sblc5clZJV3FUT1FDdDIxdm1OUHRFM2V0SnBtSmhOK2ZBPSIsInZhbHVlIjoiU1RKV3EwSzM0Q0QwSitOUkwrVzVNZUpPeVBMbEhqWEVMcCtlbldiWm1FOD0iLCJtYWMiOiJlZTI3Yzc2MGU3YzEwZTg1NDRjMDVhMWU5ZGE0MDkwYzU3YTAxNWU0OWQyZWRlOTg5NmUxOTgzYzA4M2QxOGQ3In0=")
          result = requests.get("https://nl.pepper.com/search?q={0}".format(self.search_keyword), cookies=cookies)
          content = result.content
          soup = BeautifulSoup(content, 'html.parser')
          return soup.find_all('a', class_='thread-title-text', limit=1)[0].get_text()
  
      def check_price_error(self):
          articles = self.parse_site()
          message_text = 'Zoekterm: {0} | *PRIJSFOUT GEVONDEN OP PEPPER*: {1}'.format(self.search_keyword, articles)
  
          if not os.path.isfile(self.filename):
              self.write_to_file(self.filename, articles)
              exit(0)
          else:
              with open(self.filename, 'r') as f:
                  file_content = f.read().replace('\n', '')
  
                  if file_content != articles:
                      self.send_telegram(self.watcher_name, message_text)
              self.write_to_file(self.filename, articles)
  
subject: fix error and edit message