Repeating entry in my error log

[undercoverfab]

Can someone point me int he correct direction in resolving a problem I am having with a recurring series of entries in my error log? I assume its related to the fact that I have 'pagenotfound' repeating in my visitors online page.  Here is what it looks like:

 

[06-Nov-2019 11:54:02 US/Central] PHP Notice:  Undefined index: subcategories in /home/c45ze72g6r1g/public_html/var/cache/prod/smarty/compile/layouts_layout_full_width_tpl/38/0a/dd/380addc9637f69afcd6c6a8513dff4af7c11dac9_2.file.not-found.tpl.php on line 28
[06-Nov-2019 11:54:02 US/Central] PHP Notice:  Trying to get property 'value' of non-object in /home/c45ze72g6r1g/public_html/var/cache/prod/smarty/compile/layouts_layout_full_width_tpl/38/0a/dd/380addc9637f69afcd6c6a8513dff4af7c11dac9_2.file.not-found.tpl.php on line 28
[06-Nov-2019 11:54:02 US/Central] PHP Warning:  count(): Parameter must be an array or an object that implements Countable in /home/c45ze72g6r1g/public_html/var/cache/prod/smarty/compile/layouts_layout_full_width_tpl/38/0a/dd/380addc9637f69afcd6c6a8513dff4af7c11dac9_2.file.not-found.tpl.php on line 28

Here is line 28 in that listed file:

 

<?php if (count($_smarty_tpl->tpl_vars['subcategories']->value)) {?>

 

 

Thanks,

 

 

Edited November 6, 2019 by undercoverfab
Spelling (see edit history)

[lototo]

Check is smarty variable exist before using it in code

{if (isset($variable)}
{/if}

In PHP you have to check is it object https://www.php.net/manual/en/function.is-object.php 

is($_smarty_tpl->tpl_vars) && count($_smarty_tpl->tpl_vars['subcategories'])

 

Edited November 7, 2019 by lototo (see edit history)

[undercoverfab]

lototo,

 

Can you tell me what files to check for these lines of code?

 

Thanks,

 

23 hours ago, undercoverfab said:

<?php if (count($_smarty_tpl->tpl_vars['subcategories']->value)) {?>

 

[PrestaHeroes USA]

Hi, these are not errors but notices and the php script continues.  It's very possible that further code will check the value of a variable before processing, if you see an error post notice then of course this would be something to address.

Unless there is a broken process directly related to a notice then 99.9% of the time you can ignore them.  We often set php error to not report notices so we can see if true errors.

Happy PrestaShopping