diff --git a/src/components/Note/Article/index.tsx b/src/components/Note/Article/index.tsx
index 3af8c49..ff9e360 100644
--- a/src/components/Note/Article/index.tsx
+++ b/src/components/Note/Article/index.tsx
@@ -167,7 +167,7 @@ export default function Article({
   }
 
   return (
-    <div className={`${parsedContent.cssClasses} ${className || ''}`}>
+    <div className={`${parsedContent?.cssClasses || ''} ${className || ''}`}>
       {/* Article metadata */}
       <h1 className="break-words">{metadata.title}</h1>
       {metadata.summary && (
@@ -184,10 +184,10 @@ export default function Article({
 
 
       {/* Render AsciiDoc content (everything is now processed as AsciiDoc) */}
-      <div ref={contentRef} className={isArticleType ? "asciidoc-content" : "simple-content"} dangerouslySetInnerHTML={{ __html: parsedContent.html }} />
+      <div ref={contentRef} className={isArticleType ? "asciidoc-content" : "simple-content"} dangerouslySetInnerHTML={{ __html: parsedContent?.html || '' }} />
 
       {/* Collapsible Article Info - only for article-type events */}
-      {isArticleType && (parsedContent.media.length > 0 || parsedContent.links.length > 0 || parsedContent.nostrLinks.length > 0 || parsedContent.highlightSources.length > 0 || parsedContent.hashtags.length > 0) && (
+      {isArticleType && (parsedContent?.media?.length > 0 || parsedContent?.links?.length > 0 || parsedContent?.nostrLinks?.length > 0 || parsedContent?.highlightSources?.length > 0 || parsedContent?.hashtags?.length > 0) && (
         <Collapsible open={isInfoOpen} onOpenChange={setIsInfoOpen} className="mt-4">
           <CollapsibleTrigger asChild>
             <Button variant="outline" className="w-full justify-between">
@@ -197,11 +197,11 @@ export default function Article({
           </CollapsibleTrigger>
           <CollapsibleContent className="space-y-4 mt-2">
             {/* Media thumbnails */}
-            {parsedContent.media.length > 0 && (
+            {parsedContent?.media?.length > 0 && (
               <div className="p-4 bg-muted rounded-lg">
                 <h4 className="text-sm font-semibold mb-3">Images in this article:</h4>
                 <div className="grid grid-cols-8 sm:grid-cols-12 md:grid-cols-16 gap-1">
-                  {parsedContent.media.map((media, index) => (
+                  {parsedContent?.media?.map((media, index) => (
                     <div key={index} className="aspect-square">
                       <ImageWithLightbox
                         image={media}
@@ -217,11 +217,11 @@ export default function Article({
             )}
 
             {/* Links summary with OpenGraph previews */}
-            {parsedContent.links.length > 0 && (
+            {parsedContent?.links?.length > 0 && (
               <div className="p-4 bg-muted rounded-lg">
                 <h4 className="text-sm font-semibold mb-3">Links in this article:</h4>
                 <div className="space-y-3">
-                  {parsedContent.links.map((link, index) => (
+                  {parsedContent?.links?.map((link, index) => (
                     <WebPreview
                       key={index}
                       url={link.url}
@@ -233,11 +233,11 @@ export default function Article({
             )}
 
             {/* Nostr links summary */}
-            {parsedContent.nostrLinks.length > 0 && (
+            {parsedContent?.nostrLinks?.length > 0 && (
               <div className="p-4 bg-muted rounded-lg">
                 <h4 className="text-sm font-semibold mb-2">Nostr references:</h4>
                 <div className="space-y-1">
-                  {parsedContent.nostrLinks.map((link, index) => (
+                  {parsedContent?.nostrLinks?.map((link, index) => (
                     <div key={index} className="text-sm">
                       <span className="font-mono text-blue-600">{link.type}:</span>{' '}
                       <span className="font-mono">{link.id}</span>
@@ -248,11 +248,11 @@ export default function Article({
             )}
 
             {/* Highlight sources */}
-            {parsedContent.highlightSources.length > 0 && (
+            {parsedContent?.highlightSources?.length > 0 && (
               <div className="p-4 bg-muted rounded-lg">
                 <h4 className="text-sm font-semibold mb-3">Highlight sources:</h4>
                 <div className="space-y-3">
-                  {parsedContent.highlightSources.map((source, index) => (
+                  {parsedContent?.highlightSources?.map((source, index) => (
                     <HighlightSourcePreview
                       key={index}
                       source={source}
@@ -264,11 +264,11 @@ export default function Article({
             )}
 
             {/* Hashtags */}
-            {parsedContent.hashtags.length > 0 && (
+            {parsedContent?.hashtags?.length > 0 && (
               <div className="p-4 bg-muted rounded-lg">
                 <h4 className="text-sm font-semibold mb-3">Tags:</h4>
                 <div className="flex gap-2 flex-wrap">
-                  {parsedContent.hashtags.map((tag) => (
+                  {parsedContent?.hashtags?.map((tag) => (
                     <div
                       key={tag}
                       title={tag}
diff --git a/src/components/Note/SimpleContent/index.tsx b/src/components/Note/SimpleContent/index.tsx
index ce248fc..63ed338 100644
--- a/src/components/Note/SimpleContent/index.tsx
+++ b/src/components/Note/SimpleContent/index.tsx
@@ -22,6 +22,10 @@ export default function SimpleContent({
     return <div className={className}>Error loading content</div>
   }
 
+  if (!parsedContent) {
+    return <div className={className}>No content available</div>
+  }
+
   return (
     <div className={`${parsedContent.cssClasses} ${className || ''}`}>
       {/* Render content without ToC and Article Info */}
diff --git a/src/lib/discussion-topics.ts b/src/lib/discussion-topics.ts
index 9cabec9..cee51bd 100644
--- a/src/lib/discussion-topics.ts
+++ b/src/lib/discussion-topics.ts
@@ -309,7 +309,7 @@ export function extractGroupInfo(
     }
   }
   
-  const { groupId, groupRelay, fullIdentifier } = parseGroupIdentifier(hTag, relaySources)
+  const { groupId, groupRelay } = parseGroupIdentifier(hTag, relaySources)
   const groupDisplayName = buildGroupDisplayName(groupId, groupRelay)
   
   return {
diff --git a/src/pages/primary/DiscussionsPage/index.tsx b/src/pages/primary/DiscussionsPage/index.tsx
index 3b23cc1..b8effdb 100644
--- a/src/pages/primary/DiscussionsPage/index.tsx
+++ b/src/pages/primary/DiscussionsPage/index.tsx
@@ -457,6 +457,13 @@ const DiscussionsPage = forwardRef((_, ref) => {
           logger.debug('[DiscussionsPage] Thread', threadId.substring(0, 8), 'has votes:', voteStats)
         }
         
+        // Get relay sources
+        const eventHints = client.getEventHints(threadId)
+        const relaySources = eventHints.length > 0 ? eventHints : ['unknown']
+        
+        // Extract group information
+        const groupInfo = extractGroupInfo(thread, relaySources)
+        
         // Extract topics
         const tTagsRaw = thread.tags.filter((tag: string[]) => tag[0] === 't' && tag[1]).map((tag: string[]) => tag[1].toLowerCase())
         const hashtagsRaw = (thread.content.match(/#\w+/g) || []).map((tag: string) => tag.slice(1).toLowerCase())
@@ -471,13 +478,6 @@ const DiscussionsPage = forwardRef((_, ref) => {
         const hashtags = hashtagsRaw.map((tag: string) => normalizeTopic(tag))
         const allTopics = [...new Set([...tTags, ...hashtags])]
         
-        // Get relay sources
-        const eventHints = client.getEventHints(threadId)
-        const relaySources = eventHints.length > 0 ? eventHints : ['unknown']
-        
-        // Extract group information
-        const groupInfo = extractGroupInfo(thread, relaySources)
-        
         newEventMap.set(threadId, {
           event: thread,
           relaySources,
diff --git a/src/providers/GroupListProvider.tsx b/src/providers/GroupListProvider.tsx
index 3517985..47d98be 100644
--- a/src/providers/GroupListProvider.tsx
+++ b/src/providers/GroupListProvider.tsx
@@ -1,5 +1,4 @@
 import { createContext, useContext, useEffect, useState, useCallback, useMemo } from 'react'
-import { useTranslation } from 'react-i18next'
 import { useNostr } from '@/providers/NostrProvider'
 import { useFavoriteRelays } from '@/providers/FavoriteRelaysProvider'
 import { ExtendedKind } from '@/constants'
@@ -26,8 +25,7 @@ export const useGroupList = () => {
 }
 
 export function GroupListProvider({ children }: { children: React.ReactNode }) {
-  const { t } = useTranslation()
-  const { pubkey: accountPubkey, publish, updateGroupListEvent } = useNostr()
+  const { pubkey: accountPubkey } = useNostr()
   const { favoriteRelays } = useFavoriteRelays()
   const [userGroups, setUserGroups] = useState<string[]>([])
   const [isLoading, setIsLoading] = useState(false)
diff --git a/src/services/nip89.service.ts b/src/services/nip89.service.ts
index 0434e34..4b35cc0 100644
--- a/src/services/nip89.service.ts
+++ b/src/services/nip89.service.ts
@@ -1,6 +1,5 @@
 import { ExtendedKind } from '@/constants'
 import { Event, kinds } from 'nostr-tools'
-import * as nip19 from 'nostr-tools/nip19'
 
 export interface ApplicationHandlerInfo {
   name: string
@@ -227,7 +226,6 @@ class Nip89Service {
         ExtendedKind.RELAY_REVIEW,
         ExtendedKind.PUBLICATION,
         ExtendedKind.WIKI_ARTICLE,
-        ExtendedKind.WIKI_CHAPTER
       ],
       platforms: {
         web: 'https://jumble.gitcitadel.eu/note/bech32',