라인 attribute 여부 확인 추가

src/components/fabric/QPolygon.js

@@ -167,9 +167,9 @@ export const QPolygon = fabric.util.createClass(fabric.Polygon, {
   },
 
   initLines() {
-    if (this.lines.length > 0) {
-      return
-    }
+    // if (this.lines.length > 0) {
+    //   return
+    // }
 
     this.lines = []
 

src/hooks/useCanvas.js

@@ -118,10 +118,12 @@ export function useCanvas(id) {
 
         //QLine에 커스텀 어트리뷰트 넣기
         if (this.type === 'QLine') {
-          this.attributes.type = this.attributes.type || 'default'
-          source.attributes = {
-            ...this.attributes,
-            type: this.attributes.type,
+          if (this.attributes) {
+            this.attributes.type = this.attributes.type || 'default'
+            source.attributes = {
+              ...this.attributes,
+              type: this.attributes.type,
+            }
           }
         }