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

This is a problem that can occur from time to time, especially when you beginning updating your theme or modules from your PrestaShop online shop..

Only there is a unproblematic solution, as you volition see in today's article.

Once yous accept created your online store and set up everything yous need to start selling your products or services, a HTTP 500 mistake (or internal server mistake) may appear. No need to panic!

Still, we recommend that you lot have the time to resolve it, because if an mistake of this type persists over time, it can lead to serious losses for your company's website, since it prevents users from browsing your site and therefore, purchasing your products.

But first of all, what is this error?

What is a HTTP 500 error?

A server displays a HTTP 500 error (or internal server error) when information technology cannot procedure a request, a request that should be correct in principle.

Since each server can utilize its ain texts and terminology, the error message can take many forms.

Here are some of the about common error messages:

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

Of form, such an anomaly tin can be rather worrying if you ain an online store and this store is your chief source of income.

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

Only how serious is a 500 error?

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

In this commodity, nosotros will explicate how to fix it in your PrestaShop shop.

Then next time, y'all volition take null to worry about, and tin can act quickly to avoid delaying your sales whatsoever further!

How can I detect a HTTP 500 error in my PrestaShop shop?

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

This is known every bit a server-side problem.

In other words, a failure has occurred within 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 about cases, this glitch is accompanied by a rather brief explanation, like to this one:

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

It is very important not to misfile information technology with the HTTP 404 mistake (folio not establish), that is also covered in this weblog, and available to consult at any fourth dimension.

Remember that this error can occur in whatsoever browser and operating arrangement (so no, buying the new Apple Mac Pro will not foreclose you lot from existence confronted with it at some point...)

» Here is a screenshot with an example of how this error may be displayed:

How can I fix a HTTP 500 error on my online shop website?

Although the error message is non very detailed, PrestaShop volition give you more in-depth data almost this problem.

Some servers, due to their configuration, often hide more specific mistake messages.

Therefore, if you have the same problem on your site and the error messages are too vague, you can activate your web host's FTP or CPanel fault reports in your PrestaShop store.

There are 2 ways to enable these reports, depending on the version you lot are using:

» From PrestaShop v1.four to v1.5.ii

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

» PrestaShop v1.5.three and afterwards versions (including 1.6 and one.7)

1. Open config/defines.inc.php
2. On line 28, yous will find this line: define('_PS_MODE_DEV_', false);
3. Supervene upon it with: define('_PS_MODE_DEV_', truthful);

Once error reports from the FTP or CPanel are activated, y'all tin browse your store'due south front or back office to find out what the trouble is.

Likewise, if yous cannot access your website due to error 500, yous tin can enable the error report and refresh the folio that failed to display.

You lot will then be provided more information that will assistance you to empathize the causes and location of this incident.

What tin cause an mistake 500?

Now that yous have more than information, you can apply some of the standard tips below to deepen your understanding.

To begin, review the most common causes of the problem. If we know the crusade of the problem, it is much easier to observe the correct solution and act accordingly.

The problem may be related to the following causes:

1. Permission error

In many cases, you volition find that folder permissions are not set correctly.

To correct this error, only set a file or folder dominance to 755 instead of 777 (or vice versa).

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

Cheque the specific permissions features with your host, equally some servers utilize dissimilar rules.

2. Incorrect configuration of the.htaccess file

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

Equally far equally PrestaShop is concerned, the bug are generally related to URL re-writing options and activating "friendly URLs".

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

We recommend that y'all backup your.htaccess file and restore information technology from the back office, or disable friendly URLs.

iii. Waiting time has expired

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

If the function or script exceeds this fourth dimension limit, you will receive a 500 fault.

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

• Importing CSV files.
• Fill-in files.
• Loading translations.
• Import/export.
• 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 instance: if you upgrade from version one.vi to version 1.7), you lot may encounter obsolete modules or modules that are incompatible with this new version of PrestaShop.

This can generate 500 errors. In this case, we will need to review all the Addons you have previously installed, or at to the lowest degree those that are bachelor in a more recent version.

We recommend that you always have the official PrestaShop Marketplace folio ready (or saved in your favourites), where you lot tin can obtain official modules, which are always upwardly-to-date.

What if this HTTP 500 error persists in my shop once I accept completed these checks?

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

While some of these may exist provided by your host, you may need to contact them directly to access the files.

"There are other solutions available on our forum"

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

You volition then find various data and tutorials for the type of error that occurred.

You volition also certainly find discussions on the PrestaShop forum, entitled "[RESOLVED]".

Get through it carefully and, if after reading this postal service, y'all even so haven't been able to right your mistake, exist sure to register on the PrestaShop forums and ask for aid.

With over a meg members, y'all are certain to discover answers to your questions, with the aid of other users.

At that place are also official PrestaShop support plans.

These will let you to contact u.s., and to obtain additional assistance from ane of our representatives.

Conclusion

At the kickoff of this article, nosotros told yous that a HTTP 500 error or internal server error is not as bad as information technology seems.

Now you have the right tools to right i of the most dreaded errors amidst Cyberspace users.

Offset your online store with the PrestaShop online software, and continue selling your products or services with full 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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