Opencart SEO Pack PRO error

Notice: Undefined index: custom_title in /public_html/opencart/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 22Notice: Undefined index: custom_title in /public_html/opencart/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 22Notice: Undefined index: custom_title in /public_html/opencart/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 22Notice: Undefined index: custom_title in /home/u548493900/public_html/opencart/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 22Notice: Undefined index: custom_title in /public_html/opencart/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 22Notice: Undefined index: custom_title in /public_html/opencart/vqmod/vqcache/vq2-catalog_model_catalog_product.php on line 2

Opencart SEO Pack PRO error
how solve the problems plz help me

Any help would be great as I really need this to work.

Regards
jay

this means that the custom_title variable is not defined in the model.

likely the xml file (vqmod) is not amending/editing the correct file.

I suggest you to contact the developer for some support

What agrimabo say is correct, but for an extensions to not work properly it's most possible had conflict with other extensions.
To ensure it's work properly (for both exts) you should contact the developer.