const ctx=canvas.getContext('2d')

ctx.drawImage(databus.resources.images[this.img],this.x,this.y,this.width,this.height);

发生错误：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)'