ValueError: invalid literal for int() with base 10: '' What's wrong?

Question

Python

Hello everyone, what is the error in the code:

if message.chat.id > 0:
      bot.send_message(int(user), str(message.chat.id) + " (" + message.chat.first_name + ")" + ": " + message.text[message.text.find(' '):])

Error: ValueError: invalid literal for int() with base 10: ''

Answer 1

empty string in user