php warnings with mjform

[sportvlieger]

With Mjform enabled I get the following php warning in my website:

Warning: Missing argument 1 for JText::_(), called in /home/harmonie-declub.nl/public_html/harmonie-declub.nl/templates/beez5/index.php on line 271 and defined in /home/harmonie-declub.nl/public_html/harmonie-declub.nl/libraries/joomla/methods.php on line 131

Besides that the Extension is working great.

When I disable Mjform the warning is gone. Do you know how to solve his?

[admin]

Test again
- enabled it and change template to other template.