It seems that you have created the database name with “xxx_xxxxxxxxxx” as the prefix name, so the demo import automatically create the database table under the database with that prefix name,
wp_woocommerce_downloadable_product_permissions is the actual table name = 47 char’s
_fwbk_xxx_xxxxxxxxxx_wp_woocommerce_downloadable_products_permissions = 69 char’s
In default MySQL have 64 char’s as the maximum table name size. So kindly reduce the database name Prefix value (xxx_xxxxxxxxxx) and check the issue.