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Magento 2.3.4 BUG Undefined Offset Error
I am using Magento 2.3.4 ver, i am getting the following error if i try to apply a filter,
Error Screenshot - https://i.stack.imgur.com/IIYET.png
Error:
Exception #0 (Exception): Notice: Undefined offset: -298 in /var/www/html/test/vendor/magento/framework/Search/Dynamic/Algorithm.php on line 302
How to solve this issue? Is it a configuration error?
Source Code :
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Re: Magento 2.3.4 BUG Undefined Offset Error
Hello @Aveeva ,
Sorry to inform but it's a pre-found bug in Magento which is fixed in 2.4:
https://github.com/magento/magento2/issues/22792
you can just get the changes which they have resolved :
https://github.com/magento/magento2/commit/db69693bd929bd8665015ff6d9b6a3845584aa0b
you can copy the new changes for that fix but make sure it is not dependent on any code which was added in Magento 2.4, just give it a try if works !

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Re: Magento 2.3.4 BUG Undefined Offset Error
@gaurav_harsh1 As you know my error file : /vendor/magento/framework/Search/Dynamic/Algorithm.php
Which file code i need to update in https://github.com/magento/magento2/commit/db69693bd929bd8665015ff6d9b6a3845584aa0b
Thank You.
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Re: Magento 2.3.4 BUG Undefined Offset Error
Replace all code to https://github.com/magento/magento2/blob/db69693bd929bd8665015ff6d9b6a3845584aa0b/lib/internal/Magen...
If it works for you, then make sure you override this Class, not to keep change in vendor, but for testing, just copy whole file and replace code.

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Re: Magento 2.3.4 BUG Undefined Offset Error
@gaurav_harsh1 It's working, is it okay change in core file?
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Re: Magento 2.3.4 BUG Undefined Offset Error
No, you should create preference in your Custom Module, to create preference simply add this line to your di.xml file of your module/extension.
<preference for="Magento\Framework\Search\Dynamic\Algorithm" type="[VENDOR]\[EXTENSION]\Search\Dynamic\Algorithm" />
Now, create the class [VENDOR]\[EXTENSION]\Search\Dynamic\Algorithm and add all the code of that file which you have replaced.
It will work !

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Re: Magento 2.3.4 BUG Undefined Offset Error
@gaurav_harsh1 I am new to preference, help me if i wrong,
Module :
app/code/Gta/Solver/etc/di.xml
<?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd"> <preference for="Magento\Framework\Search\Dynamic\Algorithm" type="Gta\Solver\Search\Dynamic\Algorithm" /> </config>
app/code/Gta/Solver/etc/module.xml
<?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd"> <module name="Gta_Solver" schema_version="0.0.1" setup_version="0.0.1"></module> </config>
app/code/Gta/Solver/registration.php
<?php \Magento\Framework\Component\ComponentRegistrar::register( \Magento\Framework\Component\ComponentRegistrar::MODULE, 'Gta_Solver', __DIR__ );
app/code/Gta/Solver/Search/Dynamic/Algorithm.php
code : https://justpaste.it/7f2zx
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Re: Magento 2.3.4 BUG Undefined Offset Error
Everything is correct except namespace in Algorithm class.
namespace should be
namespace Gta\Solver\Search\Dynamic;
make sure you run di:compile after everything and cache flush.
Let me know if it works for you.

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Re: Magento 2.3.4 BUG Undefined Offset Error
@gaurav_harsh1 I am getting error,
1 exception(s): Exception #0 (Magento\Framework\Exception\RuntimeException): Type Error occurred when creating object: Magento\Framework\Search\Dynamic\Algorithm\Improved
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Re: Magento 2.3.4 BUG Undefined Offset Error
Please run :
php bin/magento setup:di:compile php bin/magento c:f
and then refresh the browser.
