diff --git a/src/main/java/com/greydev/notionbackup/NotionBackup.java b/src/main/java/com/greydev/notionbackup/NotionBackup.java
index a5593b9..842f105 100644
--- a/src/main/java/com/greydev/notionbackup/NotionBackup.java
+++ b/src/main/java/com/greydev/notionbackup/NotionBackup.java
@@ -2,6 +2,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.rmi.UnexpectedException;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -123,7 +124,11 @@ public static void startGoogleDriveBackup(File fileToUpload) {
 			return;
 		}
 		GoogleDriveClient GoogleDriveClient = new GoogleDriveClient(googleServiceOptional.get(), googleDriveRootFolderId);
-		GoogleDriveClient.upload(fileToUpload);
+		boolean isSuccess = GoogleDriveClient.upload(fileToUpload);
+
+		if (!isSuccess) {
+			throw new IllegalStateException("Backup was not successful");
+		}
 	}
 
 
@@ -140,7 +145,11 @@ public static void startDropboxBackup(File fileToUpload) {
 			return;
 		}
 		DropboxClient dropboxClient = new DropboxClient(dropboxServiceOptional.get());
-		dropboxClient.upload(fileToUpload);
+		boolean isSuccess =  dropboxClient.upload(fileToUpload);
+
+		if (!isSuccess) {
+			throw new IllegalStateException("Backup was not successful");
+		}
 	}
 
 	private static Optional<String> getDropboxAccessToken() {
@@ -184,7 +193,11 @@ public static void startNextcloudBackup(File fileToUpload) {
 			return;
 		}
 
-		new NextcloudClient(email, password, webdavUrl).upload(fileToUpload);
+		boolean isSuccess = new NextcloudClient(email, password, webdavUrl).upload(fileToUpload);
+
+		if (!isSuccess) {
+			throw new IllegalStateException("Backup was not successful");
+		}
 	}
 
 	public static void startPCloudBackup(File fileToUpload) {
@@ -213,7 +226,11 @@ public static void startPCloudBackup(File fileToUpload) {
 			}
 		}
 		PCloudClient pCloudClient = new PCloudClient(pCloudApiClient.get(), pCloudFolderId);
-		pCloudClient.upload(fileToUpload);
+		boolean isSuccess = pCloudClient.upload(fileToUpload);
+
+		if (!isSuccess) {
+			throw new IllegalStateException("Backup was not successful");
+		}
 	}
 
 	private static Optional<String> extractGoogleServiceAccountSecret() {