Symbol resolve failed all the time...

[pottertech]

I started with "https://github.com/shaqarava/TradingView-UDF" as my base because I need the UDF to be in PHP. I always get "Symbol resolve failed:

"COINBASEPRO:BTC/USD, reason: invalid symbol" message and no chart. I have no idea what I am doing wrong at this point.

My web page can be reached at "http://94.237.73.33/chart-example.html" and the code is as follows:

<title>PHP TradingView UDF Example</title> <script type="text/javascript" src="chart/charting_library/charting_library.min.js"></script> <script type="text/javascript" src="chart/datafeeds/udf/dist/polyfills.js"></script> <script type="text/javascript" src="chart/datafeeds/udf/dist/bundle.js"></script> <script type="text/javascript">

function getParameterByName(name) {
name = name.replace(/[[]/, "\[").replace(/[]]/, "\]");
var regex = new RegExp("[\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results === null ? "" : decodeURIComponent(results[1].replace(/+/g, " "));
}

function initOnReady() {
var widget = window.tvWidget = new TradingView.widget({
fullscreen: true,
symbol: 'BTC/USD',
interval: 'D',
container_id: "tv_chart_container",
debug: true,
datafeed: new Datafeeds.UDFCompatibleDatafeed("http://94.237.73.33/api"),
library_path: "chart/charting_library/",
locale: getParameterByName('lang') || "en",
disabled_features: ["header_saveload","use_localstorage_for_settings"],
enabled_features: [],
charts_storage_url:"",
charts_storage_api_version: "1.1",
client_id: '',
user_id: '',
theme: getParameterByName('theme'),
});
};

window.addEventListener('DOMContentLoaded', initOnReady, false);
</script>

*** Console logs
Symbol resolve requested: BTC/USD library.4876b44fcf466b634068.js:186:2100
Event "panes_order_changed", arguments: [] library.4876b44fcf466b634068.js:568:283
Symbol resolve failed: BTC/USD, reason: invalid symbol library.4876b44fcf466b634068.js:186:2100
Event "series_properties_changed", arguments: ["lQwFlf"] library.4876b44fcf466b634068.js:568:283```

Symbol

BTC/USD on COINBASEPRO exchange

Any help is greatly appreciated.