While working with PyQt6 as a beginner, I came across an error stating that my class did not possess an attribute, causing me great confusion.

import sys
from BckendPrcss import gen_psswrd
from PyQt6.QtWidgets import QWidget, QApplication, QLineEdit, QPushButton, QVBoxLayout, QTextEdit, QPlainTextEdit
from PyQt6.QtGui import QIcon


class GuiApp(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('Password Generator')
        self.setMinimumSize(600, 500)
        self.setBaseSize(600, 500)
        
        self.button = QPushButton('Press this button to generate the password.', clicked=self.get_psswrd())
        self.txtbox = QTextEdit()
        self.txtbox.setFixedSize(200, 90)
        
        layout = QVBoxLayout
        self.setLayout(layout)
        layout.addWidget(self.txtbox)
        layout.addWidget(self.button)
    
    
    def get_psswrd(self):
        if self.txtbox:
            pass
        var= gen_psswrd()
        self.txtbox.setText('This is your password:{} '.format(var))

app = QApplication(sys.argv)

window = GuiApp()
window.show()

sys.exit(app.exec())

After researching for a while, I couldn’t find anything to explain why it was happening. This is the error I received.

AttributeError: 'GuiApp' object has no attribute 'txtbox'

I tried to re-indent the blocks of code to fix any potential issues arising from improper indentation. It still didn’t fix anything, and I’ve confirmed that my tab key indents with four spaces.