Parsing error: Missing ',' or '}' in Rich Result Test tool by Google - parsing-error

Question

I run this code on Google rich result tool and it shows me this error on line 21-25 Parsing error: Missing ',' or '}', I was trying to find where the missing comma or bracket was but did not quite get it, if anyone knows where the problem is, much appreciated. I also used Google structured data testing tool and it is also showing me error on line 21
Here is the code:
<script data-desc="seo-organization" type="application/ld+json">
{
"#context": "http://schema.org",
"#type": "Organization",
"#id": "https://stockphototees.com#organization",
"name": "Stock Photo Tees",
"url": "https://stockphototees.com","logo": {
"type": "ImageObject",
"url": "https://cdn.shopify.com/s/files/1/1501/0626/t/25/assets
/pluginseo_structuredDataLogo_small.png?v=6356307188231393273"
},
"image": "https://cdn.shopify.com/s/files/1/1501/0626/t/25/assets
/pluginseo_structuredDataLogo_small.png?v=6356307188231393273","
sameAs": ["https://www.facebook.com/stockphototees"]
}
</script><script data-desc="seo-product" type="application/ld+json">
{
"#context": "http://schema.org/",
"#type": "Product",
"#id": "https://stockphototees.com/products/firm-handshakebetween-business-associates#product",
"name": "Firm Handshake Between "Business Associates" sweatshirt",
"image": "https://cdn.shopify.com/s/files/1/1501/0626/products
/firm_handshake_between_business_associates_-
_adobe_stock_apparel_450x450.png?v=1600273744",
"description": "Put. That coffee. Down. Coffee's for closers
only. Nothing says you do business more than this iconic handshake
image. Always be closing: wear this sweatshirt. Sizing information ",
"mpn": "7865498313",
"brand": {
"#type": "Thing",
"name": "Stock Photo Tees"
},
"offers": {
"priceCurrency": "USD",
"lowPrice":30.99,
"highPrice":30.99,
"availability": "OutOfStock",
"offerCount":1,
"seller": {
"#type": "Organization",
"#id": "https://stockphototees.com#organization"
}
},
"model": [{
"#type": "ProductModel",
"#id": "https://stockphototees.com/products/firmhandshake-between-business-associates#productModel=25326698121",
"url": "https://stockphototees.com/products/firmhandshake-between-business-associates?variant=25326698121",
"name": "Firm Handshake Between Business Associates
sweatshirt XS",
"mpn": "25326698121","sku": "","weight": {
"#type": "QuantitativeValue",
"value": 292,
"unitCode": "GRM"
},
"additionalProperty": [{
"#type": "PropertyValue",
"name": "Size",
"value": "XS"
}],"image": "https://cdn.shopify.com/s/files/1/1501
/0626/products/mockup-f75a6cd3_450x450.jpg?v=1600273720",
"offers": {
"#type": "Offer",
"priceCurrency": "USD",
"availability": "OutOfStock",
"seller": {
"#type": "Organization",
"#id": "https://stockphototees.com#organization"
}
}
},{
"#type": "ProductModel",
"#id": "https://stockphototees.com/products/firmhandshake-between-business-associates#productModel=25326698185",
"url": "https://stockphototees.com/products/firmhandshake-between-business-associates?variant=25326698185",
"name": "Firm Handshake Between Business Associates
sweatshirt S",
"mpn": "25326698185","sku": "","weight": {
"#type": "QuantitativeValue",
"value": 306,
"unitCode": "GRM"
},
"additionalProperty": [{
"#type": "PropertyValue",
"name": "Size",
"value": "S"
}],"image": "https://cdn.shopify.com/s/files/1/1501
/0626/products/mockup-f75a6cd3_450x450.jpg?v=1600273720",
"offers": {
"#type": "Offer",
"priceCurrency": "USD",
"price":30.99,
"availability": "OutOfStock",
"seller": {
"#type": "Organization",
"#id": "https://stockphototees.com#organization"
}
}
},{
"#type": "ProductModel",
"#id": "https://stockphototees.com/products/firmhandshake-between-business-associates#productModel=25326698249",
"url": "https://stockphototees.com/products/firmhandshake-between-business-associates?variant=25326698249",
"name": "Firm Handshake Between Business Associates
sweatshirt M",
"mpn": "25326698249","sku": "","weight": {
"#type": "QuantitativeValue",
"value": 323,
"unitCode": "GRM"
},
"additionalProperty": [{
"#type": "PropertyValue",
"name": "Size",
"value": "M"
}],"image": "https://cdn.shopify.com/s/files/1/1501
/0626/products/mockup-f75a6cd3_450x450.jpg?v=1600273720",
"offers": {
"#type": "Offer",
"price":30.99,
"availability": "OutOfStock",
"seller": {
"#type": "Organization",
"#id": "https://stockphototees.com#organization"
}
}
},{
"#type": "ProductModel",
"#id": "https://stockphototees.com/products/firmhandshake-between-business-associates#productModel=25326698313",
"url": "https://stockphototees.com/products/firmhandshake-between-business-associates?variant=25326698313",
"name": "Firm Handshake Between Business Associates
sweatshirt L",
"mpn": "25326698313","sku": "","weight": {
"#type": "QuantitativeValue",
"value": 366,
"unitCode": "GRM"
},
"additionalProperty": [{
"#type": "PropertyValue",
"name": "Size",
"value": "L"
}],"image": "https://cdn.shopify.com/s/files/1/1501
/0626/products/mockup-f75a6cd3_450x450.jpg?v=1600273720",
"offers": {
"#type": "Offer",
"priceCurrency": "USD",
"price":30.99,
"availability": "OutOfStock",
"seller": {
"#type": "Organization",
"#id": "https://stockphototees.com#organization"
}
}
},{
"#type": "ProductModel",
"#id": "https://stockphototees.com/products/firmhandshake-between-business-associates#productModel=25326698441",
"url": "https://stockphototees.com/products/firmhandshake-between-business-associates?variant=25326698441",
"name": "Firm Handshake Between Business Associates
sweatshirt XL",
"mpn": "25326698441","sku": "","weight": {
"#type": "QuantitativeValue",
"value": 377,
"unitCode": "GRM"
},
"additionalProperty": [{
"#type": "PropertyValue",
"name": "Size",
"value": "XL"
}],"image": "https://cdn.shopify.com/s/files/1/1501
/0626/products/mockup-f75a6cd3_450x450.jpg?v=1600273720",
"offers": {
"#type": "Offer",
"priceCurrency": "USD",
"price":30.99,
"availability": "OutOfStock",
"seller": {
"#type": "Organization",
"#id": "https://stockphototees.com#organization"
}
}
},{
"#type": "ProductModel",
"#id": "https://stockphototees.com/products/firmhandshake-between-business-associates#productModel=25326698505",
"url": "https://stockphototees.com/products/firmhandshake-between-business-associates?variant=25326698505",
"name": "Firm Handshake Between Business Associates
sweatshirt 2XL",
"mpn": "25326698505","sku": "","weight": {
"#type": "QuantitativeValue",
"value": 465,
"unitCode": "GRM"
},
"additionalProperty": [{
"#type": "PropertyValue",
"name": "Size",
"value": "2XL"
}],"image": "https://cdn.shopify.com/s/files/1/1501
/0626/products/mockup-f75a6cd3_450x450.jpg?v=1600273720",
"offers": {
"#type": "Offer",
"priceCurrency": "USD",
"price":30.99,
"availability": "OutOfStock",
"seller": {
"#type": "Organization",
"#id": "https://stockphototees.com#organization"
}
}
}]
}}
</script>

Answer 1

Since that's just a JSON, put the contents of your script tags into any JSON editor (e.g. https://jsoneditoronline.org, but any other would work too) and it will point out the issue. One particular issue you have (there may be other) is prematurely ended string here:
"name": "Firm Handshake Between "Business Associates" sweatshirt",
Here, embedded quotes should be escaped like this:
"name": "Firm Handshake Between \"Business Associates\" sweatshirt",
Another problem there is that there are embedded literal newlines for description property. You would need to either strip them or replace with \n.