Blank page on back office after upgrading version 1.4 to 1.5.3.1 using 1click upgrade.

[alexeeve]

Hi,

 

I've been following solved forums related to this topic but still no luck.

After i upgrade my website to 1.5.3.1 and try to login to my back office, it brings me to a blank page/white page.

 

When i turn

 

define('_PS_MODE_DEV_', false);

to

define('_PS_MODE_DEV_', true);

 

it displays the error:

Fatal error: Call to undefined method Helper::renderShopList() in /home/monara/public_html/monalisadress.com/classes/controller/AdminController.php on line 1330

 

so in the AdminController.php with line: 1330, chnage this:

'shop_list' => Helper::renderShopList(),

to

/*'shop_list' => Helper::renderShopList(),*/

 

and now i can see the back office after i login but the problem is it gives me new errors. When i go to Modules and Themes, it displays a blank page. So my question is:

 

What should i do with the first error the blank page after logging in to back office? Because i think the line: 'shop_list' => Helper::renderShopList(), in AdminController.php is important.

 

Please Help me with this because i've been doing this for two days. Thanks a lot.

 

Regards,

Yrag

[vekia]

hello

 

what version of prestashop you've got before update?

[alexeeve]

hello

 

what version of prestashop you've got before update?

It's 1.4.2.5 i am using velvet sky theme and their latest theme version is compatible with prestashop version 1.5.3.1 that is why i'm upgrading it to this version. thanks.

[alexeeve]

Please help prestashop developers. I need to upgrade it because the old version is giving me errors when uploading new product image, all images from back office to front office are broken images(pixelated). I got no answer to this thread. Please help. Thanks.

[alexeeve]

Prestashop Developers.. You can't solve this?