error 500 ERROR 500 After server migration - ContainerBuilder not found

[White Lion]

My PrestaShop v 1.7.4.2

Both servers from same hosting provider and they done migration.

After migrate a server I got HTTP ERROR 500

Front office and back office are not working.

Then I enabled error reports using defines.inc.php

After ('_PS_MODE_DEV_', false); Replace it with: define('_PS_MODE_DEV_', true); showing this error report

Fatal error: Uncaught Error: Class 'PrestaShop\PrestaShop\Core\ContainerBuilder' not found in /home/..../public_html/config/bootstrap.php:34 Stack trace: #0 /home/..../public_html/config/config.inc.php(57): require_once() #1 /home/..../public_html/index.php(27): require('/home/..../p...') #2 {main} thrown in /home/..../public_html/config/bootstrap.php on line 34

Edited May 10, 2020 by White Lion
Highlight Error Report (see edit history)

[White Lion]

I tried : https://stackoverflow.com/a/21796530

Here is  the report

 

Fatal error: Uncaught Error: Class 'PrestaShop\PrestaShop\Core\ContainerBuilder' not found in /home/.../public_html/config/bootstrap.php:34 Stack trace: #0 /home/..../public_html/config/config.inc.php(57): require_once() #1 /home/..../public_html/index.php(60): require('/home/..../p...') #2 {main} thrown in /home/..../public_html/config/bootstrap.php on line 34

Edited May 10, 2020 by White Lion
Highlight error report (see edit history)

[White Lion]

I've upload phppsinfo.php and here is the result page

[White Lion]

1. Ive Try to rename /var/cache to /var/cache_old

2. I deleted the folder cache / class_index.php

but is it is not worked to me.

[Johan G]

 

I have the same problem and am also looking for a solution. I think it has to do with the Mysqli version. What was the mysqli version on the previous server?

[White Lion]

They said they set same.

They migration another Prestashop site from old server to new server and its working correctly. That is running on PrestaShop™ 1.6.0.14

Only issue with PrestaShop v 1.7.4.2 running website.

[Johan G]

True, 1.6 no problem at all. A fresh installation with 1.7 also no problem. Only a migration from server with Prestashop 1.7 causes problems.

What I determine. With a fresh installation of prestashop 1.7 (on a server with msqlnd) ,these drivers are automatically installed and the datebase is linked without errors. 
This must be done manually during a migration ( server with musqli 5.x). PHP files must be modified to load appropriate drivers.

But ... I have no idea where or how to do this.

Edited May 12, 2020 by Johan G (see edit history)

[White Lion]

@ Johan G

PS 1.6 is better than 1.7

I did not face any server migration issues with  PS 1.6

Edited May 13, 2020 by White Lion
typing mistake correction (see edit history)

[NeroAdvents]

Hi,

Did you manage to solve your issue ? 

I encountered this issue after installing a new package with composer.

Need Help pls !

[White Lion]

Hello @ NeroAdvents

Yes. I solve the issue.

I've contacted web development agency and they fix it.

[Thegioidogiadung]

Hi

we had the same problem and got support of host provider to solve

[Tomacoulli]

Hello, 

I've the same problem, i don't know how to fix it. Do you have any tips for me ? 

Quote

Fatal error: Uncaught Error: Class 'PrestaShop\PrestaShop\Core\ContainerBuilder' not found in /home/fibreoy/www/config/bootstrap.php:34 Stack trace: #0 /home/fibreoy/www/config/config.inc.php(57): require_once() #1 /home/fibreoy/www/admin6411/index.php(42): require('/home/fibreoy/w...') #2 {main} thrown in /home/fibreoy/www/config/bootstrap.php on line 34
 

Thanks

Best regards