[Vuejs]-Receiving a 'coordinates must be an array of two or more positions' error

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if this.locationData is an array then the input does not require extra brackets around it.

   turf.lineString(this.locationData, {name: 'line 1'});

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As you can see, the error is no longer there, but no line is showing up on my map.

Also, as you can see in my IDE, it seems I need at least THAT array in there