prestashop upgrade from 1.5.6 to 1.6 failed,couldn't access both front and back office

[jzylbj]

I upgrade prestashop from 1.5.6.2 to 1.6 with 1-click auto upgrade,but one error happen,then i couldn't access both front and back office.

Now i make debug mode is true,the error like this.

PHP Fatal error: Class 'Collection' not found in /var/www/classes/ObjectModel.php on line 1545

I did the latest backup,but i don't know how to roll back.

Please help me to correct error .

Thanks.

 

[bellini13]

What version of Prestashop did you upgrade to? 

 

What version of PHP do you have installed on your host server?

[jzylbj]

What version of Prestashop did you upgrade to? 

 

What version of PHP do you have installed on your host server?

1.5.6.2  to the latest 1.6 version.

 

Php is php 5.4.4

[bellini13]

1.5.6.2  to the latest 1.6 version.

 

I'm not here to guess.  What version of PS v1.6 did you upgrade to?

[jzylbj]

I'm not here to guess.  What version of PS v1.6 did you upgrade to?

1.6.0.14

[bellini13]

Collection is not a Prestashop Class, and is also not a class in PHP.  So you must have some custom code or module that is trying to load this class, and is not found.

 

Have you looked at your old store to see if a Collection.php file exists in /classes folder?

 

Also, please include the entire error message you received when you enabled debug mode, the stack trace may be helpful