If you are using earlier versions of Joomla than 3.9.2 on php 5.x you may get a blank screen after administrator (backend) login after 30 11 2020.
Some of the error messages (J! backend):
Undefined variable: recommendedVersion in /plugins/quickicon/phpversioncheck/phpversioncheck.php on line 177
Undefined variable: recommendedVersionEndOfSupport in /plugins/quickicon/phpversioncheck/phpversioncheck.php on line 178
Fatal error: Call to a member function format() on null in /plugins/quickicon/phpversioncheck/phpversioncheck.php on line 178
The problem is with public_html/plugins/quickicon/phpversioncheck/phpversioncheck.php file.
Quick Fix
Open the file plugins/quickicon/phpversioncheck/phpversioncheck.php
Change this part of the code:
$supportStatus['message'] = JText::sprintf(
'PLG_QUICKICON_PHPVERSIONCHECK_UNSUPPORTED',
PHP_VERSION,
$recommendedVersion,
$recommendedVersionEndOfSupport->format(JText::_('DATE_FORMAT_LC4'))
);
to this:
$supportStatus['message'] ="";
Permanent fixes
This should be your next step after the quick fix.
- Update Joomla above 3.2.x (Github J! core fix)
- Update PHP version
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By Oliver Menyhart