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Have you lot ever wondered why the screen suddenly turns white while browsing your website, displaying a "HTTP 500 error"?

This is a trouble that tin occur from time to fourth dimension, peculiarly when y'all start updating your theme or modules from your PrestaShop online store..

But in that location is a uncomplicated solution, as y'all volition come across in today's commodity.

In one case you accept created your online store and ready everything you demand to outset selling your products or services, a HTTP 500 error (or internal server error) may appear. No need to panic!

Nonetheless, nosotros recommend that y'all take the time to resolve it, because if an error of this type persists over time, it can pb to serious losses for your company'south website, since it prevents users from browsing your site and therefore, purchasing your products.

Just first of all, what is this mistake?

What is a HTTP 500 error?

A server displays a HTTP 500 fault (or internal server error) when it cannot process a request, a request that should be correct in principle.

Since each server can use its own texts and terminology, the error message tin take many forms.

Hither are some of the about common error messages:

• "Error 500 (Internal Server Error)"
• "Error 500 - Internal server error"
• "Internal server fault"
• "HTTP Fault 500"
• "Fault 500"
• "HTTP Fault 500"

Of class, such an anomaly can be rather worrying if yous own an online store and this store is your main source of income.

And for web developers, it'south a nightmare: a frantic race to become your site up and running again.

Just how serious is a 500 error?

Although it sounds terrifying, encountering such a problem on your online shop is not the end of the earth.

In this article, we will explicate how to fix it in your PrestaShop store.

And then next time, you will have cypher to worry nearly, and can act quickly to avert delaying your sales whatsoever further!

How tin I detect a HTTP 500 mistake in my PrestaShop shop?

In summary, this famous 500 mistake is the web server's way of saying "Oops! An error has occurred, but we tin can't tell you more."

This is known every bit a server-side problem.

In other words, a failure has occurred inside the hosting service which hosts the website.

This is a very general warning, usually due to problems with PHP settings, programming or website permissions.

In most cases, this glitch is accompanied by a rather brief explanation, similar to this one:

The server reported an unexpected fault and cannot complete the client' s request.

It is very important not to confuse information technology with the HTTP 404 fault (page not found), that is also covered in this blog, and available to consult at any time.

Think that this error tin can occur in whatever browser and operating system (so no, buying the new Apple Mac Pro volition non prevent you from existence confronted with it at some point...)

» Here is a screenshot with an instance of how this mistake may be displayed:

How can I ready a HTTP 500 mistake on my online store website?

Although the error message is non very detailed, PrestaShop will requite you more in-depth data about this trouble.

Some servers, due to their configuration, often hibernate more specific error messages.

Therefore, if you lot have the aforementioned problem on your site and the mistake messages are too vague, you lot can activate your web host'south FTP or CPanel fault reports in your PrestaShop shop.

At that place are 2 ways to enable these reports, depending on the version you are using:

» From PrestaShop v1.4 to v1.5.ii

1. Open config/config.inc.php
2. On line 29, yous will observe this line: @ini_set('display_errors','off');
3. Replace it with: @ini_set('display_errors','on');

» PrestaShop v1.v.3 and subsequently versions (including 1.half-dozen and i.7)

1. Open config/defines.inc.php
2. On line 28, you will find this line: ascertain('_PS_MODE_DEV_', false);
3. Replace information technology with: ascertain('_PS_MODE_DEV_', true);

Once fault reports from the FTP or CPanel are activated, you can browse your store'south forepart or back role to notice out what the problem is.

Besides, if you cannot access your website due to mistake 500, you tin can enable the error report and refresh the page that failed to brandish.

You volition and then be provided more information that will help y'all to understand the causes and location of this incident.

What can crusade an error 500?

Now that yous take more information, you tin employ some of the standard tips below to deepen your agreement.

To begin, review the near common causes of the problem. If we know the cause of the problem, it is much easier to find the right solution and human action accordingly.

The problem may be related to the following causes:

1. Permission mistake

In many cases, yous will find that folder permissions are not set correctly.

To correct this mistake, simply prepare a file or binder dominance to 755 instead of 777 (or vice versa).

In general, 777 permissions are incredibly unprotected and even an apprentice hacker can enter your files and add harmful malware.

Check the specific permissions features with your host, every bit some servers utilize unlike rules.

2. Incorrect configuration of the.htaccess file

Internal server problems are often caused by a poorly configured .htaccess file.

As far every bit PrestaShop is concerned, the problems are mostly related to URL re-writing options and activating "friendly URLs".

A .htaccess file'southward format is very strict, and even an wrong character or command could cause an internal 500 server error. Therefore, from the "friendly URLs" option, indicating "NO" could be a solution (don't forget to relieve your changes).

We recommend that you fill-in your.htaccess file and restore it from the dorsum office, or disable friendly URLs.

three. Waiting time has expired

Each server has its own waiting time, which determines how long a script will run.

If the office or script exceeds this time limit, you lot volition receive a 500 error.

Here are the PrestaShop scripts that may accept besides long to load:

• Importing CSV files.
• Backup files.
• Loading translations.
• Import/consign.
• Regenerating miniature views.

In most cases, the server time limit is 30 seconds, which is not enough for these scripts.

In this case, you should contact your host and ask them to change this setting (at least temporarily).

4. Obsolete modules

When updating your shop (for case: if you upgrade from version 1.half-dozen to version ane.vii), yous may come across obsolete modules or modules that are incompatible with this new version of PrestaShop.

This tin generate 500 errors. In this case, we will need to review all the Addons y'all have previously installed, or at least those that are bachelor in a more contempo version.

Nosotros recommend that you lot always have the official PrestaShop Market place page fix (or saved in your favourites), where yous tin obtain official modules, which are e'er up-to-date.

What if this HTTP 500 error persists in my store once I take completed these checks?

In this case, you should consult the Apache and PHP fault logs.

While some of these may be provided past your host, you may need to contact them directly to admission the files.

"There are other solutions available on our forum"

Even if it seems obvious at showtime glance, when you receive specific PrestaShop information concerning the error or log file, you may want to exercise a Google search (focus on the problem and add the word "PrestaShop" to your search).

Yous will and so find diverse data and tutorials for the type of mistake that occurred.

Y'all will too certainly notice discussions on the PrestaShop forum, entitled "[RESOLVED]".

Get through it carefully and, if after reading this post, you withal haven't been able to correct your error, be certain to register on the PrestaShop forums and ask for help.

With over a million members, you are certain to find answers to your questions, with the aid of other users.

There are too official PrestaShop support plans.

These will allow y'all to contact united states, and to obtain additional assistance from one of our representatives.

Conclusion

At the showtime of this commodity, nosotros told you lot that a HTTP 500 error or internal server error is not as bad equally it seems.

Now yous take the right tools to correct one of the most dreaded errors amongst Internet users.

First your online store with the PrestaShop online software, and go along selling your products or services with total peace of mind!

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Source: https://www.prestashop.com/en/blog/the-500-internal-server-error-explained-solved

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