diff --git a/package.json b/package.json
index 97055cd78..9dcd6f3af 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "core-js": "^3.6.5",
     "date-fns": "^2.16.1",
     "epubjs": "^0.3.85",
-    "pdfjs-dist": "^2.4.456",
+    "pdfjs-dist": "2.4.456",
     "fast-text-encoding": "^1.0.3",
     "flv.js": "^1.5.0",
     "headroom.js": "^0.11.0",
diff --git a/src/bundle.js b/src/bundle.js
index 7ea1cee45..3dcb95442 100644
--- a/src/bundle.js
+++ b/src/bundle.js
@@ -101,7 +101,7 @@ _define('epubjs', function () {
     return epubjs;
 });
 
-var pdfjs = require('pdfjs-dist/build/pdf');
+const pdfjs = require('pdfjs-dist/build/pdf');
 _define('pdfjs', function () {
     return pdfjs;
 });
diff --git a/src/plugins/bookPlayer/plugin.js b/src/plugins/bookPlayer/plugin.js
index 1634018fa..c56777f37 100644
--- a/src/plugins/bookPlayer/plugin.js
+++ b/src/plugins/bookPlayer/plugin.js
@@ -22,7 +22,6 @@ export class BookPlayer {
         this.prevChapter = this.prevChapter.bind(this);
         this.nextChapter = this.nextChapter.bind(this);
         this.onWindowKeyUp = this.onWindowKeyUp.bind(this);
-        this.onTouchStart = this.onTouchStart.bind(this);
     }
 
     play(options) {
diff --git a/src/plugins/pdfPlayer/plugin.js b/src/plugins/pdfPlayer/plugin.js
index 7516fc4b9..1dcb5212f 100644
--- a/src/plugins/pdfPlayer/plugin.js
+++ b/src/plugins/pdfPlayer/plugin.js
@@ -1,4 +1,3 @@
-import connectionManager from 'connectionManager';
 import loading from 'loading';
 import keyboardnavigation from 'keyboardnavigation';
 import dialogHelper from 'dialogHelper';
@@ -187,7 +186,7 @@ export class PdfPlayer {
         };
 
         let serverId = item.ServerId;
-        let apiClient = connectionManager.getApiClient(serverId);
+        let apiClient = window.connectionManager.getApiClient(serverId);
 
         return new Promise((resolve, reject) => {
             import('pdfjs').then(({default: pdfjs}) => {