BigCommerce API Product Import Error: Sorry, something went wrong. Go to product list - bigcommerce

Question

I'm importing products via the API. The import runs well (no errors), but following the import, whenever I select to EDIT one of the imported products from the product list, I get the following error:
Sorry, something went wrong.
Go to product list
I assume something is wrong with the import data I sent, but without further information I don't know where to start looking for the issue.
For reference, below is the JSON POST data for one of the imported products:
Array
(
[name] => Calla Lily & Foliage Silk Flower Centerpiece
[type] => physical
[sku] => FLB108-WG
[description] => Lots of HTML shortened to make this code more vieweable
[weight] => 0
[price] => 159.00
[brand_id] => 38
[inventory_level] => 0
[inventory_warning_level] => 1
[is_free_shipping] =>
[is_visible] => 1
[layout_file] => product.html
[upc] => 848644000167
[availability] => disabled
[custom_url] => Array
(
[url] =>
[is_customized] =>
)
[categories] => Array
(
[0] => 23
)
[bulk_pricing_rules] => Array
(
)
[images] => Array
(
[0] => Array
(
[is_thumbnail] => 1
[sort_order] => 1
[image_url] => https://www.petals.com//files/imagesSF/product/750/flb108-wg_zoom.jpg
[description] => white green calla lily & foliage silk centerpiece, velvety texture, natural appearance green foliage, black stones in acrylic water in heavy 6" square tapered glass vase
)
)
[variants] => Array
(
)
[inventory_tracking] => product
[custom_fields] => Array
(
[0] => Array
(
[name] => pageId
[value] => 47
)
[1] => Array
(
[name] => notice
[value] => FLB108-WG
)
[2] => Array
(
[name] => summaryImage
[value] => /files/imagesSF/product/165/flb108-wg_cat.jpg
)
[3] => Array
(
[name] => product_productName
[value] => Calla Lily & Foliage
)
[4] => Array
(
[name] => product_title
[value] => Calla Lily & Foliage
)
[5] => Array
(
[name] => product_productNumber
[value] => FLB108-WG
)
[6] => Array
(
[name] => product_catalogNumber
[value] => FLB108-WG
)
[7] => Array
(
[name] => product_imagePath
[value] => files/imagesSF/product/165/flb108-wg_cat.jpg
)
[8] => Array
(
[name] => imageBurst
[value] => /files/imagesSF/global/bursts/new-bestseller-icon-burst-105.jpg
)
[9] => Array
(
[name] => acrylicWater
[value] => 1
)
[10] => Array
(
[name] => recipeLocation
[value] => right
)
[11] => Array
(
[name] => prodType
[value] => standard
)
[12] => Array
(
[name] => childTitle
[value] => Calla Lily & Foliage
)
[13] => Array
(
[name] => expShip
[value] => 1
)
[14] => Array
(
[name] => imageBurstLink
[value] => /files/filesSF/popups/express-shipping.html
)
[15] => Array
(
[name] => mobile_name
[value] => Calla Lily & Foliage
)
[16] => Array
(
[name] => googleTitle
[value] => Silk Calla Lily Flower Centerpiece with Foliage
)
)
)
Below is the response from BC:
stdClass Object
(
[data] => stdClass Object
(
[id] => 234
[name] => Calla Lily & Foliage
Silk Flower Centerpiece
[type] => physical
[sku] => FLB108-WG
[description] => Again reduced for your viewing pleasure
[weight] => 0
[width] => 0
[depth] => 0
[height] => 0
[price] => 159
[cost_price] => 0
[retail_price] => 0
[sale_price] => 0
[map_price] => 0
[tax_class_id] => 0
[product_tax_code] =>
[calculated_price] => 159
[categories] => Array
(
[0] => 23
)
[brand_id] => 38
[option_set_id] =>
[option_set_display] => right
[inventory_level] => 0
[inventory_warning_level] => 1
[inventory_tracking] => product
[reviews_rating_sum] => 0
[reviews_count] => 0
[total_sold] => 0
[fixed_cost_shipping_price] => 0
[is_free_shipping] =>
[is_visible] => 1
[is_featured] =>
[related_products] => Array
(
[0] => -1
)
[warranty] =>
[bin_picking_number] =>
[layout_file] => product.html
[upc] => 848644000167
[mpn] =>
[gtin] =>
[search_keywords] =>
[availability] => disabled
[availability_description] =>
[gift_wrapping_options_type] => any
[gift_wrapping_options_list] => Array
(
)
[sort_order] => 0
[condition] => New
[is_condition_shown] =>
[order_quantity_minimum] => 0
[order_quantity_maximum] => 0
[page_title] =>
[meta_keywords] => Array
(
)
[meta_description] =>
[date_created] => 2020-08-13T22:16:57+00:00
[date_modified] => 2020-08-13T22:16:57+00:00
[view_count] => 0
[preorder_release_date] =>
[preorder_message] =>
[is_preorder_only] =>
[is_price_hidden] =>
[price_hidden_label] =>
[custom_url] =>
[base_variant_id] => 222
[open_graph_type] => product
[open_graph_title] =>
[open_graph_description] =>
[open_graph_use_meta_description] => 1
[open_graph_use_product_name] => 1
[open_graph_use_image] => 1
[variants] => Array
(
[0] => stdClass Object
(
[id] => 222
[product_id] => 234
[sku] => FLB108-WG
[sku_id] =>
[price] => 159
[calculated_price] => 159
[sale_price] => 0
[retail_price] => 0
[map_price] => 0
[weight] => 0
[width] => 0
[height] => 0
[depth] => 0
[is_free_shipping] =>
[fixed_cost_shipping_price] => 0
[calculated_weight] => 0
[purchasing_disabled] => 1
[purchasing_disabled_message] =>
[image_url] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.386.513.jpg?c=1
[cost_price] => 0
[upc] => 848644000167
[mpn] =>
[gtin] =>
[inventory_level] => 0
[inventory_warning_level] => 1
[bin_picking_number] =>
[option_values] => Array
(
)
)
)
[images] => Array
(
[0] => stdClass Object
(
[id] => 471
[product_id] => 234
[is_thumbnail] => 1
[sort_order] => 1
[description] => white green calla lily & foliage silk centerpiece, velvety texture, natural appearance green foliage, black stones in acrylic water in heavy 6" square tapered glass vase
[image_file] => h/864/flb108-wg_zoom__07246.jpg
[url_zoom] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.1280.1280.jpg?c=1
[url_standard] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.386.513.jpg?c=1
[url_thumbnail] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.220.290.jpg?c=1
[url_tiny] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.44.58.jpg?c=1
[date_modified] => 2020-08-13T22:16:57+00:00
)
)
[primary_image] => stdClass Object
(
[id] => 471
[product_id] => 234
[is_thumbnail] => 1
[sort_order] => 1
[description] => white green calla lily & foliage silk centerpiece, velvety texture, natural appearance green foliage, black stones in acrylic water in heavy 6" square tapered glass vase
[image_file] => h/864/flb108-wg_zoom__07246.jpg
[url_zoom] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.1280.1280.jpg?c=1
[url_standard] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.386.513.jpg?c=1
[url_thumbnail] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.220.290.jpg?c=1
[url_tiny] => https://cdn11.bigcommerce.com/s-r932bs4ubb/products/234/images/471/flb108-wg_zoom__07246.1597357017.44.58.jpg?c=1
[date_modified] => 2020-08-13T22:16:57+00:00
)
[videos] => Array
(
)
[custom_fields] => Array
(
[0] => stdClass Object
(
[id] => 2808
[name] => pageId
[value] => 47
)
[1] => stdClass Object
(
[id] => 2809
[name] => notice
[value] => FLB108-WG
)
[2] => stdClass Object
(
[id] => 2810
[name] => summaryImage
[value] => /files/imagesSF/product/165/flb108-wg_cat.jpg
)
[3] => stdClass Object
(
[id] => 2811
[name] => product_productName
[value] => Calla Lily & Foliage
)
[4] => stdClass Object
(
[id] => 2812
[name] => product_title
[value] => Calla Lily & Foliage
)
[5] => stdClass Object
(
[id] => 2813
[name] => product_productNumber
[value] => FLB108-WG
)
[6] => stdClass Object
(
[id] => 2814
[name] => product_catalogNumber
[value] => FLB108-WG
)
[7] => stdClass Object
(
[id] => 2815
[name] => product_imagePath
[value] => files/imagesSF/product/165/flb108-wg_cat.jpg
)
[8] => stdClass Object
(
[id] => 2816
[name] => imageBurst
[value] => /files/imagesSF/global/bursts/new-bestseller-icon-burst-105.jpg
)
[9] => stdClass Object
(
[id] => 2817
[name] => acrylicWater
[value] => 1
)
[10] => stdClass Object
(
[id] => 2818
[name] => recipeLocation
[value] => right
)
[11] => stdClass Object
(
[id] => 2819
[name] => prodType
[value] => standard
)
[12] => stdClass Object
(
[id] => 2820
[name] => childTitle
[value] => Calla Lily & Foliage
)
[13] => stdClass Object
(
[id] => 2821
[name] => expShip
[value] => 1
)
[14] => stdClass Object
(
[id] => 2822
[name] => imageBurstLink
[value] => /files/filesSF/popups/express-shipping.html
)
[15] => stdClass Object
(
[id] => 2823
[name] => mobile_name
[value] => Calla Lily & Foliage
)
[16] => stdClass Object
(
[id] => 2824
[name] => googleTitle
[value] => Silk Calla Lily Flower Centerpiece with Foliage
)
)
[bulk_pricing_rules] => Array
(
)
[reviews] => Array
(
)
[options] => Array
(
)
[modifiers] => Array
(
)
[parent_relations] => Array
(
)
)
[meta] => stdClass Object
(
)
)

Answer 1

Turns out the issue is with the custom_url element:
[custom_url] => Array
(
[url] =>
[is_customized] =>
)
This should not be included at all if url is not customized.