diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bfaf548
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,176 @@
+# Created by https://www.toptal.com/developers/gitignore/api/macos,xcode,swift,objective-c,swiftpackagemanager
+# Edit at https://www.toptal.com/developers/gitignore?templates=macos,xcode,swift,objective-c,swiftpackagemanager
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### macOS Patch ###
+# iCloud generated files
+*.icloud
+
+### Objective-C ###
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## User settings
+xcuserdata/
+
+## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9)
+*.xcscmblueprint
+*.xccheckout
+
+## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4)
+build/
+DerivedData/
+*.moved-aside
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+
+## Obj-C/Swift specific
+*.hmap
+
+## App packaging
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+# CocoaPods
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+# Pods/
+# Add this line if you want to avoid checking in source code from the Xcode workspace
+# *.xcworkspace
+
+# Carthage
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build/
+
+# fastlane
+# It is recommended to not store the screenshots in the git repo.
+# Instead, use fastlane to re-generate the screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# Code Injection
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+iOSInjectionProject/
+
+### Objective-C Patch ###
+
+### Swift ###
+# Xcode
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+
+
+
+
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+# Package.resolved
+# *.xcodeproj
+# Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata
+# hence it is not needed unless you have added a package configuration file to your project
+# .swiftpm
+
+.build/
+
+# CocoaPods
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+# Pods/
+# Add this line if you want to avoid checking in source code from the Xcode workspace
+# *.xcworkspace
+
+# Carthage
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+
+# Accio dependency management
+Dependencies/
+.accio/
+
+# fastlane
+# It is recommended to not store the screenshots in the git repo.
+# Instead, use fastlane to re-generate the screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+
+# Code Injection
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+
+### SwiftPackageManager ###
+Packages
+xcuserdata
+*.xcodeproj
+
+
+### Xcode ###
+
+## Xcode 8 and earlier
+
+### Xcode Patch ###
+*.xcodeproj/*
+!*.xcodeproj/project.pbxproj
+!*.xcodeproj/xcshareddata/
+!*.xcodeproj/project.xcworkspace/
+!*.xcworkspace/contents.xcworkspacedata
+/*.gcno
+**/xcshareddata/WorkspaceSettings.xcsettings
+
+# End of https://www.toptal.com/developers/gitignore/api/macos,xcode,swift,objective-c,swiftpackagemanager
\ No newline at end of file
diff --git a/.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata b/.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..919434a
--- /dev/null
+++ b/.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>
diff --git a/OnlineChatSdk/Classes/ChatController.swift b/OnlineChatSdk/Classes/ChatController.swift
index c35e7e7..49eaa21 100644
--- a/OnlineChatSdk/Classes/ChatController.swift
+++ b/OnlineChatSdk/Classes/ChatController.swift
@@ -7,7 +7,7 @@
 //
 
 import UIKit
-import WebKit
+@preconcurrency import WebKit
 import AVFoundation
 
 open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessageHandler {
@@ -31,7 +31,7 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
     private static let method_destroy = "destroy"
     private static let method_pageLoaded = "pageLoaded"
     
-    public var chatView: WKWebView!
+    public var chatView: WKWebView?
     private var callJs: Array<String>!
     private var didFinish: Bool = false
     private var widgetUrl: String = ""
@@ -150,7 +150,7 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
             frame = (parent?.view.bounds)!
         }
         chatView = WKWebView(frame: frame, configuration: config)
-        chatView.navigationDelegate = self
+        chatView?.navigationDelegate = self
         view = chatView
     }
 
@@ -213,7 +213,7 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
     }
     
     private func callJs(_ script: String) {
-        chatView.evaluateJavaScript(script)
+        chatView?.evaluateJavaScript(script)
     }
     
     private func toJson(_ jsonObj: AnyObject) -> String {
@@ -319,8 +319,8 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
         if url == nil {
             url = URL(string: widgetUrl)
         }
-        chatView.load(URLRequest(url: url!))
-        chatView.allowsBackForwardNavigationGestures = true
+        chatView?.load(URLRequest(url: url!))
+        chatView?.allowsBackForwardNavigationGestures = true
     }
     
     public func injectCss(style: String) {
@@ -456,7 +456,7 @@ open class ChatController: UIViewController, WKNavigationDelegate, WKScriptMessa
         super.viewDidDisappear(animated)
 
         if animated && chatView != nil {
-            chatView.stopLoading()
+            chatView?.stopLoading()
             callJsDestroy()
             chatView = nil
         }
diff --git a/OnlineChatSdk/Classes/ChatDateFormatter.swift b/OnlineChatSdk/Classes/ChatDateFormatter.swift
index b8e4d05..ad0aa9e 100644
--- a/OnlineChatSdk/Classes/ChatDateFormatter.swift
+++ b/OnlineChatSdk/Classes/ChatDateFormatter.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-class ChatDateFormatter : DateFormatter {
+class ChatDateFormatter : DateFormatter, @unchecked Sendable {
 
     override init() {
         super.init()