Warning regarding class-wp-hook.php

Hello,

I am getting following error in my site.

Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in D:\xampp\htdocs\MEGABAZAR-WOODMART\wp-includes\class-wp-hook.php on line 288
class=”product-grid-item product without-stars product-no-swatches quick-shop-on quick-view-on woodmart-hover-base col-xs-6 col-sm-6 col-md-4 post-1601 type-product status-publish has-post-thumbnail product_cat-smartphones-tablets instock shipping-taxable product-type-simple” data-loop=”2″ data-id=”1601″>

I deactivated all plugins but the error persists. Then I activated twentyseventeen theme and activating it solved this issue.

Any idea how I can solve this issue? I am attaching my class-wp-hook.php.