Lots of Errors after restoration 2.1.0.1

Unknown: Creation of dynamic property Request::$request is deprecated in /home3/fortiusa/public_html/store/system/library/request.php on line 12Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in /home3/fortiusa/public_html/store/system/library/session.php on line 7Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in /home3/fortiusa/public_html/store/system/library/session.php on line 8Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in /home3/fortiusa/public_html/store/system/library/session.php on line 9Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in /home3/fortiusa/public_html/store/system/library/session.php on line 10Warning: session_set_cookie_params(): Session cookie parameters cannot be changed after headers have already been sent in /home3/fortiusa/public_html/store/system/library/session.php on line 20Warning: session_start(): Session cannot be started after headers have already been sent in /home3/fortiusa/public_html/store/system/library/session.php on line 21Unknown: Creation of dynamic property Customer::$config is deprecated in /home3/fortiusa/public_html/store/system/library/customer.php on line 14Unknown: Creation of dynamic property Customer::$db is deprecated in /home3/fortiusa/public_html/store/system/library/customer.php on line 15Unknown: Creation of dynamic property Customer::$request is deprecated in /home3/fortiusa/public_html/store/system/library/customer.php on line 16Unknown: Creation of dynamic property Customer::$session is deprecated in /home3/fortiusa/public_html/store/system/library/customer.php on line 17Unknown: Creation of dynamic property Affiliate::$config is deprecated in /home3/fortiusa/public_html/store/system/library/affiliate.php on line 12Unknown: Creation of dynamic property Affiliate::$db is deprecated in /home3/fortiusa/public_html/store/system/library/affiliate.php on line 13Unknown: Creation of dynamic property Affiliate::$request is deprecated in /home3/fortiusa/public_html/store/system/library/affiliate.php on line 14Unknown: Creation of dynamic property Affiliate::$session is deprecated in /home3/fortiusa/public_html/store/system/library/affiliate.php on line 15Unknown: Creation of dynamic property Currency::$config is deprecated in /home3/fortiusa/public_html/store/system/library/currency.php on line 7Unknown: Creation of dynamic property Currency::$db is deprecated in /home3/fortiusa/public_html/store/system/library/currency.php on line 8Unknown: Creation of dynamic property Currency::$language is deprecated in /home3/fortiusa/public_html/store/system/library/currency.php on line 9Unknown: Creation of dynamic property Currency::$request is deprecated in /home3/fortiusa/public_html/store/system/library/currency.php on line 10Unknown: Creation of dynamic property Currency::$session is deprecated in /home3/fortiusa/public_html/store/system/library/currency.php on line 11Unknown: Creation of dynamic property Tax::$config is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_modification_system_library_tax.php on line 12Unknown: Creation of dynamic property Tax::$db is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_modification_system_library_tax.php on line 13Unknown: Creation of dynamic property Tax::$session is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_modification_system_library_tax.php on line 14Unknown: Creation of dynamic property Weight::$db is deprecated in /home3/fortiusa/public_html/store/system/library/weight.php on line 6Unknown: Creation of dynamic property Weight::$config is deprecated in /home3/fortiusa/public_html/store/system/library/weight.php on line 7Unknown: Creation of dynamic property Length::$db is deprecated in /home3/fortiusa/public_html/store/system/library/length.php on line 6Unknown: Creation of dynamic property Length::$config is deprecated in /home3/fortiusa/public_html/store/system/library/length.php on line 7Unknown: Creation of dynamic property Cart::$config is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_library_cart.php on line 6Unknown: Creation of dynamic property Cart::$customer is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_library_cart.php on line 7Unknown: Creation of dynamic property Cart::$session is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_library_cart.php on line 8Unknown: Creation of dynamic property Cart::$db is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_library_cart.php on line 9Unknown: Creation of dynamic property Cart::$tax is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_library_cart.php on line 10Unknown: Creation of dynamic property Cart::$weight is deprecated in /home3/fortiusa/public_html/store/vqmod/vqcache/vq2-system_library_cart.php on line 11Unknown: Creation of dynamic property Openbay::$logger is deprecated in /home3/fortiusa/public_html/store/system/library/openbay.php on line 18Unknown: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /home3/fortiusa/public_html/store/catalog/model/catalog/product.php on line 45

mioduz wrote: ↑

Mon Sep 08, 2025 1:01 am

I tried updating to 4.x

by mona wrote: ↑

Mon Sep 08, 2025 2:17 am

At the every basic level - Opencart 4 requires php8 and Opencart 2.1.0.1 will not function on php8 (unless you specifically upgraded it). You will have to put that back.

No information provided HOW you are trying to restore - but contact your host and ask them to restore from a back up database and files.
Why are you trying to upgrade to Opencart 4 anyway? It is not stable, not advised for live sites and has many bugs ?

Opencart 3.0.4.1 supports php8.
and do not upgrade using the "quick way" it is not quick - it is safer and quicker to install from scratch, import data, install mods you absolutely need, check it all works and ask your host to transfer it over to live.

paulfeakins wrote: ↑

Mon Sep 08, 2025 7:25 pm

mioduz wrote: ↑

Mon Sep 08, 2025 1:01 am

I tried updating to 4.x

Let me stop you there.

Most top OpenCart developers do not recommend using 4 yet, instead use 3.0.4.1.

mioduz wrote: ↑

Mon Sep 08, 2025 8:36 pm

by mona wrote: ↑

Mon Sep 08, 2025 2:17 am

At the every basic level - Opencart 4 requires php8 and Opencart 2.1.0.1 will not function on php8 (unless you specifically upgraded it). You will have to put that back.

No information provided HOW you are trying to restore - but contact your host and ask them to restore from a back up database and files.
Why are you trying to upgrade to Opencart 4 anyway? It is not stable, not advised for live sites and has many bugs ?

Opencart 3.0.4.1 supports php8.
and do not upgrade using the "quick way" it is not quick - it is safer and quicker to install from scratch, import data, install mods you absolutely need, check it all works and ask your host to transfer it over to live.

Thank you for your reply. I am aware that 2.x will not function on PHP 8. I have reverted PHP version to an older rev.

I made of a backup of my "store" directory before trying to do the upgrade. I have restored that. I am no longer trying to update to 4.x, I just want to get my 2.1 install back up and running. Before any changes where made to opencart I did do a backup from the Admin side. Is it best to make a clean install of 3.x and restore from that 2.1 backup at this point?