I am trying to update my community, and I am constantly getting the error:

Class IPS\core\setup\upg_107795\Upgrade could not be loaded. Ensure it is in the correct namespace.
#0 [internal function]: IPS\IPS::errorHandler(256, 'Class IPS\\core\\...', '/home/gorillaho...', 749) #1 /home/***/public_html/forum.***.it/init.php(749): trigger_error('Class IPS\\core\\...', 256) #2 [internal function]: IPS\IPS::autoloader('IPS\\core\\setup\\...') #3 /home/***/public_html/forum.***.it/applications/core/sources/Setup/Upgrade.php(629): class_exists('\\IPS\\core\\setup...') #4 /home/***/public_html/forum.***.it/applications/core/sources/Setup/Upgrade.php(369): IPS\core\Setup\Upgrade->step1(Array) #5 /home/***/public_html/forum.***.it/applications/core/modules/setup/upgrade/upgrade.php(60): IPS\core\Setup\Upgrade->process(Array) #6 /home/***/public_html/forum.***.it/system/Helpers/MultipleRedirect/MultipleRedirect.php(104): IPS\core\modules\setup\upgrade\upgrade->IPS\core\modules\setup\upgrade\{closure}(Array) #7 /home/***/public_html/forum.***.it/applications/core/modules/setup/upgrade/upgrade.php(45): IPS\Helpers\MultipleRedirect->__construct(Object(IPS\Http\Url), Object(Closure), Object(Closure)) #8 /home/***/public_html/forum.***.it/system/Dispatcher/Controller.php(139): IPS\core\modules\setup\upgrade\upgrade->manage() #9 /home/***/public_html/forum.***.it/system/Dispatcher/Setup.php(261): IPS\Dispatcher\Controller->execute() #10 /home/***/public_html/forum.***.it/admin/upgrade/index.php(38): IPS\Dispatcher\Setup->run() #11 {main}
/home/***/public_html/forum.***.it/init.php::749
Retry?
Continue

The only query it asked me to run manually:

ALTER TABLE `xipb_core_api_logs` ADD( KEY `cleanup` (`response_code`,`date`) );

Server version: 8.0.41-0ubuntu0.24.04.1 - (Ubuntu)

PHP: 8.2

What are the causes of the problem? How can I solve it?

Please ensure that all files are present. Additionally, if you're running version 4, PHP 8.2 is not supported. Please use PHP 8.1

1 hour ago, Askancy said:

I am trying to update my community, and I am constantly getting the error:

What version are you upgrading from and to what version and by which method? It looks like the files haven't been overwritten properly.

@Jim M It's a bug. The file was included in 5.0.1 after being imported from v4, but the class was not renamed to remove the underscore (which is not used in v5):

/**
 * 4.7.20 Beta 1 Upgrade Code
 */
class _Upgrade

Found this one as well, removed the underscore and re-run

I confirm what @teraßyte said, by removing the underscore, the upgrade was successful.

applications\core\setup\upg_107795\upgrade.php

I have fixed this for 5.0.2.