Problem upgrading from Php5.5 to Php7

As you can see here WordPress should run with PHP 7.2 or higher.

I am constantly updating the WP. It works in Php 5.6.

If you can, use 7.2. Php 5.6 only gets security support and will be dropped this year.
If you can’t open the Customizer, you should turn the WP_DEBUG mode on and see if there are any errors. Don’t forget to turn off the debug mode again, if your page is public.

define (‘WP_DEBUG’, true);

No Php7.2

Not apply Php7.1

Php7.0: tuyograf.com: customization panel does not open
Php7.0: w.tuyograf.com: no problem

define (‘WP_DEBUG’, true);

What do you mean with this? You have to write this at the bottom of your wp-config.php file. Please see the WordPress codex page for further information.

Php7.0: tuyograf.com: customization panel does not open
Php7.0: w.tuyograf.com: no problem

It’s hard for me to help you further. I don’t know nothing about your server setup, your installations, your file changes or even what the difference between your two domains should be.

Again, please activate the WP_DEBUG mode for tuyograf.com and see if there are any errors.

In your other topic you said, that the customization panel doesn’t open when you activate the gallery plugin. What’s the name of the plugin?
Where do you have the gallery on your page?
Where do you click on “Customize”? Is it working when you navigate to Dashboard > Appearence > Customize? Or when you are on your front page and then click on Customize in your admin bar on the top of your page?

define(‘WP_DEBUG’, false);

I added confic.php page to the bottom line.

https://w.tuyograf.com/hizmetler/

It’s not about the gallery plugin, I guess I tried it again.

w.tuyograf.com is a sample or trial work site, no optimization and no seo.

Only the customization panel does not open.

so,
define (‘WP_DEBUG’, true);

When the debug mode is set to true, are there any errors?

Please search the .htaccess file via ftp. Then rename it to .htaccessbackup.

Then log into your site and go to Dashboard > Settings > Permalinks. Then just hit save. This should create a new .htaccess file.

If this doesn’t work, go to ftp > wp-content and rename the directory plugins to pluginsbackup. Log into your dashboard and all of your plugins should be deactivated. Then rename the directory to plugins. Then check if the Customizer is working again. If it is working, activate one plugin and check if it’s still working. Then activate the next plugin and test again.

If the error appears with all plugins deactivated please add define( 'WP_MEMORY_LIMIT', '256M' ); to the bottom of your wp-config.php file. Then see if the error still appears.

2-3 days ago I uninstalled the plugin and changed it, but no changes.
It was established with 5.5, there is a possibility that other problems will arise later.
I am doing the site again on my subdomain (php 7.1).

I can’t you help any further than this I guess.

Thanks..

Hi,

Solution 1 did not work. But the 2nd solution worked, I tested all the plugins WP Mail SMTP and Yoast SEO customization prevented it from working.

All plugins have been disabled, define (‘WP_MEMORY_LIMIT’, ‘256M’); I added it to the bottom of the wp-config.php file. I tested it again. WP Mail SMTP and Yoast SEO customization prevented it from working.
Other than that, it works normally.

Test results are always changing