Backoffice doesn't open

[De Zipper]

Hello,

I am new to Prestashop, so I used the video's and instructions provided by Prestashop to do my first install. 
This was just a week ago.  I followed all the steps one by one and managed to install everything perfectly.  I could access the backoffice, apply some changes, install modules and themes, etc.

This week, we decided on a new name for our store, so I registered another domainname, deleted everything from the old one and tried installing everything from the beginning.

So: new domain (same hosting partner),  I upload the install files with FileZilla, follow all the other steps (unpack, create database, run the installer, enter my log-in data,...)

Everythings seems to be working fine, but when I acces the admin-login page and enter my log-in data, it seems to work, only it shows nothing but this (image attached).

Nothing but my store name...  I can't access the backoffice.
Frontoffice seems to be working fine: just the standard template with demo products.

Any ideas???

 

[Adrian_Ascentis]

I have installed PrestaShop yesterday and I have the same problem.

 

[De Zipper]

Hello Adrian, 

Because I managed to install everything perfectly one week earlier, I went back through my downloads and checked what version I installed:

The first time, I installed 1.7.6.9 which worked fine...

One week later, I installed 1.7.7.0, which resulted in the problem.

Tried 1.7.6.9 again and that worked.

Hope this helps!
 

[Ioannis Chatzis]

Hello!!!

I just installed Presta 1.7.6.9 and when i delete install folder i get white screen even i try to open back office page and shop page.

Any valuable information?

Thanks!

[leandoan]

Same problem.  I am new to presta shop and did the install and everything seem to go ok.  But can't log in to admin.  I just get like the above user.  The logo and name of my shop.  It does not take me to the back office.  When I pull up my website it is the template example that installed so that worked.  How do I get to the Back Office.  Is it presta shop or my host don't know who to ask if I missed a step and why it is not working.  Would like to get it started ASAP

Quote

 

 

[JBW]

It can happen with outdated ICU version and might be solved by using newer PHP 7.3 version.
More details here:
https://github.com/PrestaShop/PrestaShop/issues/22300

 

[leandoan]

I read thru the github and don't understand it at all.  How do I get the php 7.3.  Not a computer whiz and got the presta shop because it said you could be up and running in 5 minutes.  So how do I find the php version and upgrade it?

[leandoan]

OK I checked with my host provider which is Bluehost and they say it is a script error.  So I need that resoved.  My php version I believe is ok 7.3 something on their side.  So they said to check with script editor or website developer so need to know how to do that.

[leandoan]

Never mind figured out how to change php up to 7.4 and it worked so far.

[JBW]

4 minutes ago, leandoan said:

Never mind figured out how to change php up to 7.4 and it worked so far.

So never trust your hosting provider Anyway Prestaship 1.7.7. is onyl compatible until PHP 7.3. - if you use 7.4. you might unexpected behaviour or issues later on.

[Guest]

Open ./src/Core/Util/InternationalizedDomainNameConverter.php

replace function emailToUtf8 to:

public function emailToUtf8(string $email): string
    {
        $parts = explode('@', $email);
        if (count($parts) !== 2) {
            return $email;
        }

        return $parts[0] . '@' . idn_to_utf8($parts[1], 0, intval(INTL_IDNA_VARIANT_UTS46));
    }

or:

public function emailToUtf8(string $email): string
    {
        $parts = explode('@', $email);
        if (count($parts) !== 2) {
            return $email;
        }

        if (version_compare(phpversion(), '5.6', '>=') || version_compare(phpversion(), '7.3', '<='))
        {
            $intl = intval(INTL_IDNA_VARIANT_UTS46);
        } else
        {
            $intl = INTL_IDNA_VARIANT_UTS46;
        }
        
        return $parts[0] . '@' . idn_to_utf8($parts[1], 0, $intl);
    }

Prestashop developers should modify this function as I gave in the second example and build it into the next version of Prestashop.

Edited December 12, 2020 by Guest (see edit history)