Failed to open Python console error message

In the past, I was able to open my Python console without any problems on QGIS. However, just recently, I tried to open the Python console on QGIS 2.18.2 (Las Palmas) on my mac, but I get this error message:

Traceback (most recent call last):
  File "", line 2, in 
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/console/console.py", line 46, in show_console
    _console = PythonConsole(parent)
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/console/console.py", line 83, in __init__
    self.console = PythonConsoleWidget(self)
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/console/console.py", line 109, in __init__
    self.shell = ShellScintilla(self)

  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/console/console_sci.py", line 86, in __init__
    self.refreshSettingsShell()
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/console/console_sci.py", line 141, in refreshSettingsShell
    self.setCaretForegroundColor(cursorColor)
TypeError: QsciScintilla.setCaretForegroundColor(QColor): argument 1 has unexpected type 'unicode'

I have no idea what any of this means. I originally downloaded QGIS from kyngchaos.com, and redownloaded from the same source to see if it would work, but it didn't.