front-end-settings.php Error

We tried to run “virtual reviews plugin” in all products option. We add 150 reviews a click for 400 products in woocommerce shop.

It work well only first run. But After run around 30min, Our site was hang.

We try to re-run for second time , plugin donot respond after click run button.

We uninstalled and deleted plugin. Then re-install plugin again. But It do not work anymore.

Please advice the solution, how to fix it.

screenshort

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