[Vuejs]-Tensorflow model console error: "Error: Argument 'x' passed to 'slice2d' must be numeric tensor, but got string tensor"

Your xValues and yValues are being turned into strings from the dialogues.

Turn them back into nums by adding this to the top of your train() method

      this.xValues = this.xValues.map(value=>{return parseInt(value)});
      this.yValues = this.yValues.map(value=>{return parseInt(value)});