Fix out-of-bounds index in BesQuillService

service.js

@@ -1209,17 +1209,26 @@ class BesQuillService extends BesTreeService {
     })
 
     if (reproofNeeded) {
-      const [leaf, offset] = this.quillInstance.getLeaf(index)
-      let domElement = leaf.domNode
-      while (domElement && domElement.tagName !== 'P') {
-        domElement = domElement.parentNode
-      }
-      this.clearProofing(domElement)
+      const editorLength = this.quillInstance.getLength()
+      const clampedIndex = Math.min(index, editorLength - 1)
 
-      setTimeout(() => {
-        this.repositionAllMarkup()
-        this.scheduleProofing(1000)
-      }, 0)
+      const [leaf, offset] = this.quillInstance.getLeaf(clampedIndex)
+      if (leaf) {
+        let domElement = leaf.domNode
+        while (domElement && domElement.tagName !== 'P') {
+          domElement = domElement.parentNode
+        }
+        this.clearProofing(domElement)
+
+        setTimeout(() => {
+          this.repositionAllMarkup()
+          this.scheduleProofing(1000)
+        }, 0)
+      } else {
+        console.warn(
+          'Leaf is null. The index might be out of bounds or the editor content is empty.'
+        )
+      }
     }
   }