diff --git a/Classes/Swift/Chat/ViewModels/ChatConversationViewModel.swift b/Classes/Swift/Chat/ViewModels/ChatConversationViewModel.swift
index 75ccf781e..5a82d7824 100644
--- a/Classes/Swift/Chat/ViewModels/ChatConversationViewModel.swift
+++ b/Classes/Swift/Chat/ViewModels/ChatConversationViewModel.swift
@@ -473,16 +473,20 @@ class ChatConversationViewModel: ControlsViewModel {
 		}
 		return UIImage(named: "chat_error")!
 	}
-
+	
 	func createThumbnailOfVideoFromFileURL(videoURL: String) -> UIImage? {
-		let asset = AVAsset(url: URL(string: videoURL)!)
-		let assetImgGenerate = AVAssetImageGenerator(asset: asset)
-		assetImgGenerate.appliesPreferredTrackTransform = true
-		do {
-			let img = try assetImgGenerate.copyCGImage(at: CMTimeMake(value: 1, timescale: 10), actualTime: nil)
-			let thumbnail = UIImage(cgImage: img)
-			return thumbnail
-		} catch _{
+		if let urlVideo = URL(string: videoURL){
+			let asset = AVAsset(url: urlVideo)
+			let assetImgGenerate = AVAssetImageGenerator(asset: asset)
+			assetImgGenerate.appliesPreferredTrackTransform = true
+			do {
+				let img = try assetImgGenerate.copyCGImage(at: CMTimeMake(value: 1, timescale: 10), actualTime: nil)
+				let thumbnail = UIImage(cgImage: img)
+				return thumbnail
+			} catch _{
+				return nil
+			}
+		} else {
 			return nil
 		}
 	}
diff --git a/Classes/Swift/Chat/Views/MultilineMessageCell.swift b/Classes/Swift/Chat/Views/MultilineMessageCell.swift
index 6c058c066..8871492be 100644
--- a/Classes/Swift/Chat/Views/MultilineMessageCell.swift
+++ b/Classes/Swift/Chat/Views/MultilineMessageCell.swift
@@ -1243,14 +1243,22 @@ class MultilineMessageCell: SwipeCollectionViewCell, UICollectionViewDataSource,
 	}
 	
 	func createThumbnailOfVideoFromFileURL(videoURL: String) -> UIImage? {
-		let asset = AVAsset(url: URL(string: "file://" + videoURL.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!)!)
-		let assetImgGenerate = AVAssetImageGenerator(asset: asset)
-		assetImgGenerate.appliesPreferredTrackTransform = true
-		do {
-			let img = try assetImgGenerate.copyCGImage(at: CMTimeMake(value: 1, timescale: 10), actualTime: nil)
-			let thumbnail = UIImage(cgImage: img)
-			return thumbnail
-		} catch _{
+		if let urlEncoded = videoURL.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed){
+			if let urlVideo = URL(string: "file://" + urlEncoded){
+				let asset = AVAsset(url: urlVideo)
+				let assetImgGenerate = AVAssetImageGenerator(asset: asset)
+				assetImgGenerate.appliesPreferredTrackTransform = true
+				do {
+					let img = try assetImgGenerate.copyCGImage(at: CMTimeMake(value: 1, timescale: 10), actualTime: nil)
+					let thumbnail = UIImage(cgImage: img)
+					return thumbnail
+				} catch _{
+					return nil
+				}
+			} else {
+				return nil
+			}
+		} else {
 			return nil
 		}
 	}