title: Python 3.6 | PyQt5 | QLabel doesn't display QPixmap
body: <p>I'm trying to display a PNG image in a Widget using QLabel. I built the Widget using Qt Designer and the label shows the image properly. When I load the .ui into mi .py and execute it, everything shows up well, except for the label. I tried loading the QPixmap manually on the python code, but it didn't work either. </p>
  
  <pre><code>from PyQt5.QtWidgets import (QApplication, QLabel)
  from PyQt5.QtGui import (QPixmap)
  from PyQt5 import uic
  import sys
  import os
  
  form = uic.loadUiType('gui/Files/Login.ui')
  
  
  class LoginWindow(form[0], form[1]):
      def __init__(self):
          super().__init__()
          self.setupUi(self)
          self.logoLabel.setPixmap(QPixmap(os.path.abspath(os.path.join(os.path.dirname(__file__), 'logo.png'))))
          self.logoLabel.show()
  
  
  if __name__ == '__main__':
      app = QApplication(sys.argv)
      win = LoginWindow()
      win.show()
      app.exec_()
  </code></pre>
  
  <p>Any idea what am I doing wrong? Any sugestions on how could I display the image other than with QLabel?</p>