What does the message around "Error importing theme file" mean?

[agwalsh1812]

I generated code (Chat GPT) asking it to give me a colour theme inspired by Harry Clarke (a dead stained glass artist). It did so.  Here's the code.  I then copied that into textpad and saved it as a json file. I then got a message as follows. What am I missing? thank you

{
"name": "Harry Clarke",
"dataColors": [
"#3E4B52", // Deep Blue
"#844C44", // Maroon
"#968A46", // Olive Green
"#CB793A", // Burnt Orange
"#4D7D7A", // Teal
"#6D738C", // Smoky Purple
"#AA5C1C", // Rust Brown
"#BA9C48", // Golden Yellow
"#4C6D70", // Slate Blue
"#736C8E" // Lavender
],
"background": "#F4F2F0",
"foreground": "#3E4B52",
"tableAccent": "#968A46",
"visualStyles": {
"*": {
"*": {
"fontFamily": "'Segoe UI', 'Arial', sans-serif",
"fontSize": "11px"
}
},
"Title": {
"color": "#844C44",
"fontWeight": "bold",
"fontSize": "18px"
},
"Visual title": {
"color": "#3E4B52",
"fontWeight": "bold",
"fontSize": "14px"
},
"Grid": {
"gridVerticalStrokeWidth": 0.5,
"gridHorizontalStrokeWidth": 0.5,
"gridStroke": "#BA9C48"
},
"TextValue": {
"color": "#3E4B52",
"fontSize": "14px"
},
"Axis": {
"grid": {
"show": true,
"stroke": "#BA9C48",
"strokeWidth": 0.5
},
"title": {
"color": "#844C44",
"fontSize": "12px",
"fontWeight": "bold"
},
"labels": {
"color": "#3E4B52",
"fontSize": "11px"
}
},
"Legend": {
"title": {
"color": "#3E4B52",
"fontWeight": "bold",
"fontSize": "12px"
},
"label": {
"color": "#3E4B52",
"fontSize": "11px"
}
}
}
}

[amitchandak]

@agwalsh1812 , prefer to generate it from Theme genetator - https://powerbi.tips/tools/report-theme-generator-v3/

chatGPT might not be accturate for theme