diff --git a/src/Drivers/index.ts b/src/Drivers/index.ts
index 2bc9410..1892962 100644
--- a/src/Drivers/index.ts
+++ b/src/Drivers/index.ts
@@ -8,7 +8,6 @@ import {
   CannotDeleteFileException,
   CannotGetMetaDataException,
   CannotSetVisibilityException,
-  Exception,
 } from '@adonisjs/core/build/standalone'
 
 import {
@@ -36,6 +35,7 @@ import {
   ContainerExistsOptions,
   ContainerCreateResponse,
   ContainerDeleteResponse,
+  BlockBlobClient,
 } from '@azure/storage-blob'
 import { ReadStream } from 'fs'
 import {
@@ -89,7 +89,7 @@ export class AzureStorageDriver implements AzureStorageDriverContract {
   }
 
   public async generateBlobSASURL(
-    blockBlobClient: { containerName: any; location: any; credential: any; url: any },
+    blockBlobClient: BlockBlobClient,
     options: BlobSASSignatureValues
   ): Promise<string> {
     options.permissions =
@@ -100,15 +100,18 @@ export class AzureStorageDriver implements AzureStorageDriverContract {
     options.startsOn = options.startsOn || new Date()
     options.expiresOn = options.expiresOn || new Date(options.startsOn.valueOf() + 3600 * 1000)
 
+    const factories = (blockBlobClient as any).pipeline.factories
+    const credential = factories[factories.length - 1] as StorageSharedKeyCredential
+
     const blobSAS = await generateBlobSASQueryParameters(
       {
         containerName: blockBlobClient.containerName, // Required
-        blobName: blockBlobClient.location, // Required
+        blobName: blockBlobClient.name, // Required
         permissions: options.permissions, // Required
         startsOn: options.startsOn,
         expiresOn: options.expiresOn,
       },
-      blockBlobClient.credential
+      credential
     )
 
     return `${blockBlobClient.url}?${blobSAS.toString()}`
diff --git a/src/Drivers/utils.ts b/src/Drivers/utils.ts
index 5b3e4d9..f782e8f 100644
--- a/src/Drivers/utils.ts
+++ b/src/Drivers/utils.ts
@@ -4,9 +4,11 @@ import { Exception } from '@adonisjs/core/build/standalone'
  * Unable to create container
  */
 export class CannotCreateContainerException extends Exception {
+  /* tslint:disable:no-unused-variable */
   private containerName: string
+  /* tslint:disable:no-unused-variable */
   private original: any
-  public static invoke(containerName: string, original: any) {
+  public static invoke(containerName: string, original: any): CannotCreateContainerException {
     const error = new this(
       `Cannot create container with name: "${containerName}"`,
       500,
@@ -22,9 +24,11 @@ export class CannotCreateContainerException extends Exception {
  * Unable to create container
  */
 export class CannotFindContainerException extends Exception {
+  /* tslint:disable:no-unused-variable */
   private containerName: string
+  /* tslint:disable:no-unused-variable */
   private original: any
-  public static invoke(containerName: string, original: any) {
+  public static invoke(containerName: string, original: any): CannotFindContainerException {
     const error = new this(
       `Cannot find container with name: "${containerName}"`,
       500,
@@ -40,9 +44,11 @@ export class CannotFindContainerException extends Exception {
  * Unable to create container
  */
 export class CannotDeleteContainerException extends Exception {
+  /* tslint:disable:no-unused-variable */
   private containerName: string
+  /* tslint:disable:no-unused-variable */
   private original: any
-  public static invoke(containerName: string, original: any) {
+  public static invoke(containerName: string, original: any): CannotDeleteContainerException {
     const error = new this(
       `Cannot delete container with name: "${containerName}"`,
       500,
diff --git a/tsconfig.json b/tsconfig.json
index 4d5e1a4..e4d0829 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,6 +2,7 @@
   "extends": "./node_modules/@adonisjs/mrm-preset/_tsconfig",
   "compilerOptions": {
     "types": ["@types/node", "@adonisjs/core"],
+    "noUnusedLocals": false,
     "skipLibCheck": true
   },
   "exclude": [