Prestashop 1.7.0.0 RC1 back office not loading

[AmirRzd]

I have installed 1.7.0.0 RC1 on a shared Linux host and

 

FO here: http://fasleaval.com/prestashop17/ is OK.

But the BO here: http://fasleaval.com/prestashop17/bo is not and I get no errors, just "The connection was reset"

 

I have turned on the DEBUG and still no Prestashop-ERROR. I also checked the server error_log, no ERROR there either to identify the problem. Just browser sends me "The connection was reset" message.

 

What might be the problem?

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P.S.1:

I installed this exact package on local (Wamp2.5-Win7_64bit) and everything is fine.

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P.S.2: In the installation process (shared Linux host)  on "System Compatibility" I got these two warnings:

Install and enable php_posix extention (used to colorize the CLI output).
Install and enable the intl extention (used for calidators).

Edited November 11, 2016 by AmirRzd (see edit history)

[Traumflug]

Trying this backoffice, it's unusual slow. Just the redirection prelude takes 18 seconds. Eventually, after about a minute, it entirely times out.
 
One reason for timeouts without error messages are database errors. As far as my research goes, if the server response is already partially sent, a database error leads to an exception, which leads to an exception, which leads to an exception, which leads to ... ... until PHP eventually times out or runs out of memory.
 
Attached is a patch for working around (not really fixing) this issue. After applying that you should get an error message, allowing to fix the database.

 

0001-CO-Fix-database-error-handling.patch.gz

[AmirRzd]

Thank you for your input. Would you please tell me how and where to apply this patch?

[Traumflug]

If you're good at the command line, you can do it like this:
 

cd top/of/my/shop
gzip -cd 0001-CO-Fix-database-error-handling.patch.gz | patch -p 1

 
One can also apply patches manually. The file name to be patched (classes/db/Db.php) is found inside the patch (a plain text file). In short: remove the lines which are preceeded with a '-' in the patch, add the lines with '+' instead. And then remove these '+'.
 
A more exhaustive eplanation: https://www.drupal.org/node/534548

 

One last word: make a copy of the original file before trying :-)

[hadobac]

I don't know if this could help, but I had encountered a similar problem, and had solved it. My approach can be found here.