图表转图片，使用getDataURL报错

[123Tank]

我现在想将图表转化为图片，于是在onChartReady方法里面使用 echartsRef.current?.chartRef.current.getDataURL()
但报了以下错，请问一下这是什么原因，应该用什么办法解决
TypeError: Failed to execute 'drawImage' on 'CanvasRenderingContext2D': The provided value is not of type '(CSSImageValue or HTMLImageElement or SVGImageElement or HTMLVideoElement or HTMLCanvasElement or ImageBitmap or OffscreenCanvas or VideoFrame)' at CanvasRenderingContext2D.e.<computed> [as drawImage] (WAServiceMainContext.js?t=wechat&s=1743039767816&v=3.6.4:1) at index.js:292 at m.eachLayer (index.js:292) at m.getRenderedCanvas (index.js:292) at c.renderToCanvas (index.js:292) at c.getDataURL (index.js:292) at handleReady (index.js:393) at _callee2$ (index.js:283) at tryCatch (._node_modules_.pnpm_@babel+runtime@7.26.0_node_modules_@babel_runtime_helpers_esm_regeneratorRuntime.js:45) at Generator.<anonymous> (._node_modules_.pnpm_@babel+runtime@7.26.0_node_modules_@babel_runtime_helpers_esm_regeneratorRuntime.js:133)(env: Windows,mp,1.06.2409140; lib: 3.6.4)

[yoga1118]

if (isWeapp) {
// 小程序里用
const canvasNode = chartRef.current?.canvasRef?.current?.canvasNode
if (!canvasNode) {
throw new Error('Canvas节点未找到')
}
url = canvasNode.toDataURL('image/png', 1.0)
console.log('Canvas节点信息:', canvasNode)
return
}
// h5里用
url = chartRef.current?.chartRef?.current.getDataURL({
type: 'png',
pixelRatio: 1
})
echartsRef.current对象里有2个，在小程序里canvasRef就是canvas那个容器，可以用canvas自带的toDataURL方法获取base64,
但是在h5，canvasRef这个对象不行，就用echarts自带的getDataURL获取