Cant log in to backoffice

[Unica e-shop]

Hi there

 

Today I updated my prestashop to 1.6.1.5 (the latest patch) but since the updating i cant log in to my prestashop backoffic, whenever i type my username and password and click log in, it just refreshes and nothing happens, no warning or fail messages is show. I have also cleared cookies, and history but still it dosent help. Hope somebody can help me out, thanks a lot.

Edited April 27, 2016 by Unica e-shop (see edit history)

[endriu107]

Turn on DEV mode, maybe there are some errors.

[Unica e-shop]

Thanks for your kind help, but how do i turn DEV mode, if your referring to Firefox debugger, than i cant see any error message, where should i look?

 

[endriu107]

Just read pinned post in forum: https://www.prestashop.com/forums/topic/224525-how-to-turn-on-error-reporting-for-debug-information-blank-page-500-internal-server-error/

[Unica e-shop]

Thank you very much; i got this message:

 

Warning: mcrypt_decrypt() [function.mcrypt-decrypt]: Received initialization vector of size 7, but size 16 is required for this encryption mode in /var/www/unicae-shop.uk/public_html/classes/Rijndael.php on line 68

Warning: Cannot modify header information - headers already sent by (output started at /var/www/unicae-shop.uk/public_html/classes/Rijndael.php:68) in /var/www/unicae-shop.uk/public_html/classes/Cookie.php on line 343

[endriu107]

What version php you use?

[Unica e-shop]

I am using unoeuro as my prestashop host, and they are using php vr. 7

[endriu107]

I'm not sure but for try you can in database table ps_configuration find PS_CIPHER_ALGORITHM and change value 1 to 0.

[Unica e-shop]

Thank you very much! it did solve it.

[tplmika]

Hi, I face the same issue. 

Dev mode : on

prompted : Fatal error: Class 'Cache' not found in /home/xxxxxx/public_html/classes/ObjectModel.php on line 1827

 

at line 1827 found :

 

        if ($field !== null || !Cache::isStored($cache_id)) {

            $reflection = new ReflectionClass($class);

 

Now i am searching for a right solution 

[Knowband Plugins]

@tplmika: Could you please check if you have following files in your prestashop installation.

 

/classes/cache/CacheApc.php

/classes/cache/CacheMemcached.php

/classes/cache/Cache.php

/classes/cache/index.php

/classes/cache/CacheFs.php

/classes/cache/CacheMemcache.php

/classes/cache/CacheXcache.php

 

If no, copy all these files from fresh prestashop (same version).

If yes, try after disable cache in config/settings.inc.php

 

define('_PS_CACHE_ENABLED_', '0');

[tplmika]

Dear Knowband Plugins,

 

Appreciate your support here. 

You are right all those 7 files are missing in classes/cache/

I already update those but still my website is still offline.

[Knowband Plugins]

Could you please try after deleting class_index.php file from /cache directory.

 

However it is not required, but we suggest you to make backup of this file before deleting it.

[tplmika]

Yes , that is a right solution

it self generate new files..

 

Now i realise underlies those issue got so much problem on my website

 

at FO:

[PrestaShopDatabaseException]

Table 'filexxx_DBxxx.psnd_attribute' doesn't exist

 

while at BO :

 

[PrestaShopDatabaseException]

Table 'filexxx_DBxxx.psnd_access' doesn't exist

[Dh42]

The issue with this is that they changed the cipher mode and your server does not support it. The easiest fix is to download an older copy of PrestaShop like 1.6.0.14 and replace the classes/Rijndael.php with the older file and everything will work. 

[playbob]

[Tue May 16 07:05:24.959792 2017] [cgi:error] [pid 10480] [client 82.163.79.3:46754] AH01215: PHP Warning: mcrypt_decrypt(): Received initialization vector of size 7, but size 16 is required for this encryption mode in /var/www/vtabloco/data/www/site/classes/Rijndael.php on line 68
[Tue May 16 07:05:25.115608 2017] [cgi:error] [pid 10480] [client 82.163.79.3:46754] AH01215: PHP Warning: mcrypt_encrypt(): Received initialization vector of size 7, but size 16 is required for this encryption mode in /var/www/vtabloco/data/www/site/classes/Rijndael.php on line 51

 

 

What is there to fix? Thank you

Edited June 24, 2017 by playbob (see edit history)

[Souls1k]

Have been using the PrestaShop for a while now but recently anytime i log into the back office any click takes me back to the login page. Please what can i do?

[gius3pp3]

I'm not sure but for try you can in database table ps_configuration find PS_CIPHER_ALGORITHM and change value 1 to 0.

Thank You! You save my life!!!

[lovemyseo]

On 4/27/2016 at 10:40 PM, endriu107 said:

I'm not sure but for try you can in database table ps_configuration find PS_CIPHER_ALGORITHM and change value 1 to 0.

worked like charm 

[lovemyseo]

On 6/22/2017 at 11:58 PM, Dh42 said:

The issue with this is that they changed the cipher mode and your server does not support it. The easiest fix is to download an older copy of PrestaShop like 1.6.0.14 and replace the classes/Rijndael.php with the older file and everything will work. 

Yes this solutions works perfecrt as well