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I just installed Magento 2.3.3 with a theme which includes MGS Frontend Builder.

If I try to open Catalog - categories or products Try to login as a customer or just try to change the configuration to flat products and categories Im getting this error:

Fatal error: Declaration of MGS\Mpanel\Helper\Swatches\Data::getProductMediaGallery(Magento\Catalog\Model\Product $product) must be compatible with Magento\Swatches\Helper\Data::getProductMediaGallery(Magento\Catalog\Model\Product $product): array in

Does anybody know how to fix this error ?

PЯINCƎ
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Sascha
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1 Answers1

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This issue is related to theme so contact to support or more solution check this link

Vishal Baraiya
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