PHP Notice: Error: Could not load template vqmod/vqcache/vq2-system_storage_modification_system_engine_loader.php on li

I have opencart 2.1.0.1, with Journal template, I tried to update the journal to the latest version, and then refreshed the modifications, everything worked except product page it shows this error with
2017-10-30 13:54:22 - PHP Notice: Error: Could not load template /......./public_html/catalog/view/theme/product/product! in /......./public_html/vqmod/vqcache/vq2-system_storage_modification_system_engine_loader.php on line 99
I removed all the extensions and modifications and refreshed, and removed vqcache, the same no change,
I have looked at that line
it is:
trigger_error('Error: Could not load template ' . $file . '!');
I have tried to echo the $file:
//echo '<br>'.DIR_TEMPLATE.'<br>'.$template;
it shows this
/..................../public_html/catalog/view/theme/
product/product

how can I solve this problem?

VQ2 errors originates from extensions, not from Opencart core. Disable any extensions until you see this error message disappear and you will find the source of the problem.

I doub't it's a template issue, because Journal is a pretty decent product. More like some of the extensions is not properly coded. Disable extensions one by one and see, which is causing the problem.

I have disabled all the extensions ,and then refreshed the modifications, but no thing changed.