src/hooks/useEvent.js

@@ -107,6 +107,10 @@ export function useEvent() {
         const horizonLines = canvas.getObjects().filter((obj) => obj.name === 'lineGrid' && obj.direction === 'horizontal')
         const verticalLines = canvas.getObjects().filter((obj) => obj.name === 'lineGrid' && obj.direction === 'vertical')
 
+        if (!horizonLines || !verticalLines) {
+          return
+        }
+
         const closestHorizontalLine = horizonLines.reduce((prev, curr) => {
           const prevDistance = calculateDistance(pointer, prev)
           const currDistance = calculateDistance(pointer, curr)