Fatal error: Class 'Mage' not found

[clockworkgeek]

I have "display_errors" set to "on" for my dev server. Sometimes, in backend, an error is shown at the bottom of a page after all other output. I have the latest dev-34 version.

Fatal error: Class 'Mage' not found in /var/www/app/code/core/Mage/Core/Model/Abstract.php on line 174

Call Stack:
    0.9556   17248592   1. Mage_Core_Model_Abstract->__sleep() /var/www/app/code/core/Mage/Core/Model/Abstract.php:0

Clearly a model is being serialized as it is disposed automatically. But the 'Mage' class has already been disposed before it.

[magento-team]

Hello. Do you still have this issue on latest version? Can you try to reproduce?

[clockworkgeek]

Issue appears fixed. I rolled back to dev34 and confirmed the error (to prove it wasn't a fluke of configuration) then went forward again to dev43 and could not see the error on several pages. Since it was intermittent to begin with this is obviously not an exhaustive test, but it does suggest all is well.

[magento-engcom-team]

Hi @clockworkgeek. Thank you for your report.
The issue has been fixed in #21731 by @VitaliyBoyko in 2.3-develop branch
Related commit(s):

• 3819dc1dcc2aa19c3811e33b88c8f31f599f8428

The fix will be available with the upcoming 2.3.2 release.

[magento-engcom-team]

Hi @clockworkgeek. Thank you for your report.
The issue has been fixed in #21793 by @VitaliyBoyko in 2.2-develop branch
Related commit(s):

• 27d113fc9295cff8909913a41867d64dbbcfb377

The fix will be available with the upcoming 2.2.9 release.