diff --git a/client/components/cards/LazyBookCard.vue b/client/components/cards/LazyBookCard.vue
index 36891e79..3bebacce 100644
--- a/client/components/cards/LazyBookCard.vue
+++ b/client/components/cards/LazyBookCard.vue
@@ -273,7 +273,7 @@ export default {
     },
     showError() {
       if (this.recentEpisode) return false // Dont show podcast error on episode card
-      return this.numMissingParts || this.isMissing || this.isInvalid
+      return this.numInvalidAudioFiles || this.numMissingParts || this.isMissing || this.isInvalid
     },
     isStreaming() {
       return this.store.getters['getlibraryItemIdStreaming'] === this.libraryItemId
@@ -297,6 +297,10 @@ export default {
       if (this.isPodcast) return 0
       return this.media.numMissingParts
     },
+    numInvalidAudioFiles() {
+      if (this.isPodcast) return 0
+      return this.media.numInvalidAudioFiles
+    },
     errorText() {
       if (this.isMissing) return 'Item directory is missing!'
       else if (this.isInvalid) {
@@ -305,7 +309,11 @@ export default {
       }
       var txt = ''
       if (this.numMissingParts) {
-        txt = `${this.numMissingParts} missing parts.`
+        txt += `${this.numMissingParts} missing parts.`
+      }
+      if (this.numInvalidAudioFiles) {
+        if (txt) txt += ' '
+        txt += `${this.numInvalidAudioFiles} invalid audio files.`
       }
       return txt || 'Unknown Error'
     },
diff --git a/client/components/controls/FilterSelect.vue b/client/components/controls/FilterSelect.vue
index dc5ed98c..2359e870 100644
--- a/client/components/controls/FilterSelect.vue
+++ b/client/components/controls/FilterSelect.vue
@@ -217,7 +217,7 @@ export default {
       return ['Finished', 'In Progress', 'Not Started']
     },
     missing() {
-      return ['ASIN', 'ISBN', 'Subtitle', 'Author', 'Publish Year', 'Series', 'Volume Number', 'Description', 'Genres', 'Tags', 'Narrator', 'Publisher', 'Language']
+      return ['ASIN', 'ISBN', 'Subtitle', 'Author', 'Publish Year', 'Series', 'Description', 'Genres', 'Tags', 'Narrator', 'Publisher', 'Language']
     },
     sublistItems() {
       return (this[this.sublist] || []).map((item) => {
diff --git a/client/pages/item/_id/index.vue b/client/pages/item/_id/index.vue
index 1798e057..9e6f8be9 100644
--- a/client/pages/item/_id/index.vue
+++ b/client/pages/item/_id/index.vue
@@ -159,6 +159,12 @@
             <p class="text-base text-gray-100 whitespace-pre-line">{{ description }}</p>
           </div>
 
+          <div v-if="invalidAudioFiles.length" class="bg-error border-red-800 shadow-md p-4">
+            <p class="text-sm mb-2">Invalid audio files</p>
+
+            <p v-for="audioFile in invalidAudioFiles" :key="audioFile.id" class="text-xs pl-2">- {{ audioFile.metadata.filename }} ({{ audioFile.error }})</p>
+          </div>
+
           <widgets-audiobook-data v-if="tracks.length" :library-item-id="libraryItemId" :media="media" />
 
           <tables-podcast-episodes-table v-if="isPodcast" :library-item="libraryItem" />
@@ -228,6 +234,10 @@ export default {
     isInvalid() {
       return this.libraryItem.isInvalid
     },
+    invalidAudioFiles() {
+      if (this.isPodcast) return []
+      return this.libraryItem.media.audioFiles.filter((af) => af.invalid)
+    },
     showPlayButton() {
       if (this.isMissing || this.isInvalid) return false
       if (this.isPodcast) return this.podcastEpisodes.length
diff --git a/server/objects/mediaTypes/Book.js b/server/objects/mediaTypes/Book.js
index 3f02a303..29f552fb 100644
--- a/server/objects/mediaTypes/Book.js
+++ b/server/objects/mediaTypes/Book.js
@@ -65,6 +65,7 @@ class Book {
       numAudioFiles: this.audioFiles.length,
       numChapters: this.chapters.length,
       numMissingParts: this.missingParts.length,
+      numInvalidAudioFiles: this.invalidAudioFiles.length,
       duration: this.duration,
       size: this.size,
       ebookFormat: this.ebookFile ? this.ebookFile.ebookFormat : null
@@ -106,8 +107,11 @@ class Book {
   get hasEmbeddedCoverArt() {
     return this.audioFiles.some(af => af.embeddedCoverArt)
   }
+  get invalidAudioFiles() {
+    return this.audioFiles.filter(af => af.invalid)
+  }
   get hasIssues() {
-    return this.missingParts.length || this.audioFiles.some(af => af.invalid)
+    return this.missingParts.length || this.invalidAudioFiles.length
   }
   get tracks() {
     var startOffset = 0
diff --git a/server/utils/libraryHelpers.js b/server/utils/libraryHelpers.js
index 55dc5da2..ac714913 100644
--- a/server/utils/libraryHelpers.js
+++ b/server/utils/libraryHelpers.js
@@ -43,7 +43,6 @@ module.exports = {
           if (filter === 'Author' && li.media.metadata.authors.length === 0) return true;
           if (filter === 'Publish Year' && li.media.metadata.publishedYear === null) return true;
           if (filter === 'Series' && li.media.metadata.series.length === 0) return true;
-          if (filter === 'Volume Number' && (li.media.metadata.series.length === 0 || li.media.metadata.series[0].sequence === null)) return true;
           if (filter === 'Description' && li.media.metadata.description === null) return true;
           if (filter === 'Genres' && li.media.metadata.genres.length === 0) return true;
           if (filter === 'Tags' && li.media.tags.length === 0) return true;
@@ -55,11 +54,7 @@ module.exports = {
         filtered = filtered.filter(li => li.media.metadata && li.media.metadata.language === filter)
       }
     } else if (filterBy === 'issues') {
-      filtered = filtered.filter(ab => {
-        // TODO: Update filter for issues
-        return ab.isMissing || ab.isInvalid
-        // return ab.numMissingParts || ab.numInvalidParts || ab.isMissing || ab.isInvalid
-      })
+      filtered = filtered.filter(li => li.hasIssues)
     }
 
     return filtered