diff --git a/packages/bus/src/exceptions/HttpCommandError.spec.ts b/packages/bus/src/exceptions/HttpCommandError.spec.ts
index eedca324..12d547a3 100644
--- a/packages/bus/src/exceptions/HttpCommandError.spec.ts
+++ b/packages/bus/src/exceptions/HttpCommandError.spec.ts
@@ -1,5 +1,6 @@
 import { HttpCommandError } from './HttpCommandError';
 import { AxiosError } from 'axios';
+import { Readable } from 'stream';
 
 describe('HttpCommandError', () => {
   describe('constructor', () => {
@@ -12,6 +13,13 @@ describe('HttpCommandError', () => {
         input: { response: { data: 'Something went wrong', status: 500 } },
         expected: { message: 'Something went wrong', status: 500 }
       },
+      {
+        input: {
+          response: { data: Readable.from('test'), status: 500 },
+          message: 'Something went wrong'
+        },
+        expected: { message: 'Something went wrong', status: 500 }
+      },
       {
         input: { message: 'Timeout reached', code: 'ETIMEDOUT' },
         expected: { message: 'Timeout reached', code: 'ETIMEDOUT' }
diff --git a/packages/bus/src/exceptions/HttpCommandError.ts b/packages/bus/src/exceptions/HttpCommandError.ts
index 78240dec..4b0ccd3e 100644
--- a/packages/bus/src/exceptions/HttpCommandError.ts
+++ b/packages/bus/src/exceptions/HttpCommandError.ts
@@ -1,13 +1,21 @@
 import { AxiosError } from 'axios';
-import { SecTesterError } from '@sec-tester/core';
+import { SecTesterError, isStream, isPresent } from '@sec-tester/core';
 
 export class HttpCommandError extends SecTesterError {
   public readonly status: number | undefined;
   public readonly code: string | undefined;
 
   constructor(public readonly cause: AxiosError) {
-    super(cause.response?.data ?? cause.message);
-    this.status = cause.response?.status;
-    this.code = cause.code;
+    super();
+    const { code, response: { data, status } = {} } = cause;
+    let { message } = cause;
+
+    if (!isStream(data) && isPresent(data)) {
+      message = data;
+    }
+
+    this.message = message;
+    this.status = status;
+    this.code = code;
   }
 }
diff --git a/packages/core/src/exceptions/SecTesterError.ts b/packages/core/src/exceptions/SecTesterError.ts
index 85b7caa2..a78dee17 100644
--- a/packages/core/src/exceptions/SecTesterError.ts
+++ b/packages/core/src/exceptions/SecTesterError.ts
@@ -1,5 +1,5 @@
 export class SecTesterError extends Error {
-  constructor(message: string) {
+  constructor(message?: string) {
     super(message);
     this.name = new.target.name;
   }
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index ba2bca8a..f1f95710 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -7,16 +7,17 @@ export * from './credentials-provider';
 export * from './exceptions';
 export * from './logger';
 export {
+  NumBoundaries,
+  checkBoundaries,
+  contains,
   delay,
-  isObject,
-  isURLSearchParams,
   isBoolean,
-  isString,
+  isDate,
   isFormData,
   isNumber,
-  isDate,
+  isObject,
   isPresent,
-  checkBoundaries,
-  contains,
-  NumBoundaries
+  isStream,
+  isString,
+  isURLSearchParams
 } from './utils';
diff --git a/packages/core/src/utils/types.spec.ts b/packages/core/src/utils/types.spec.ts
index 3663f051..474af865 100644
--- a/packages/core/src/utils/types.spec.ts
+++ b/packages/core/src/utils/types.spec.ts
@@ -5,10 +5,12 @@ import {
   isNumber,
   isObject,
   isPresent,
+  isStream,
   isString,
   isURLSearchParams
 } from './types';
 import FormData from 'form-data';
+import { Readable, Writable } from 'stream';
 
 describe('types', () => {
   describe('isNumber', () => {
@@ -132,6 +134,33 @@ describe('types', () => {
     });
   });
 
+  describe('isStream', () => {
+    it.each([
+      {
+        input: Readable.from('test'),
+        expected: true
+      },
+      {
+        input: new Writable(),
+        expected: true
+      },
+      {
+        input: {},
+        expected: false
+      },
+      {
+        input: [],
+        expected: false
+      }
+    ])('should return $expected for $input', ({ input, expected }) => {
+      // act
+      const result = isStream(input);
+
+      // arrange
+      expect(result).toEqual(expected);
+    });
+  });
+
   describe('isDate', () => {
     it.each([
       {
diff --git a/packages/core/src/utils/types.ts b/packages/core/src/utils/types.ts
index 8a2abf91..8db63f17 100644
--- a/packages/core/src/utils/types.ts
+++ b/packages/core/src/utils/types.ts
@@ -1,4 +1,5 @@
 import FormData from 'form-data';
+import { Stream } from 'stream';
 
 export const isPresent = <T>(value: T): value is NonNullable<T> =>
   value !== null && value !== undefined;
@@ -22,3 +23,8 @@ export const isURLSearchParams = (value: unknown): value is URLSearchParams =>
 
 export const isFormData = (value: unknown): value is FormData =>
   value instanceof FormData;
+
+export const isStream = (value: unknown): value is Stream =>
+  isPresent(value) &&
+  typeof value === 'object' &&
+  typeof (value as Stream).pipe === 'function';
diff --git a/packages/repeater/src/api/commands/CreateRepeaterRequest.ts b/packages/repeater/src/api/commands/CreateRepeaterRequest.ts
index 056aa193..f2ea483d 100644
--- a/packages/repeater/src/api/commands/CreateRepeaterRequest.ts
+++ b/packages/repeater/src/api/commands/CreateRepeaterRequest.ts
@@ -10,8 +10,7 @@ export class CreateRepeaterRequest extends HttpRequest<CreateRepeaterRequestPayl
     super({
       payload,
       url: '/api/v1/repeaters',
-      method: 'POST',
-      expectReply: false
+      method: 'POST'
     });
   }
 }
diff --git a/packages/repeater/src/api/commands/DeleteRepeaterRequest.ts b/packages/repeater/src/api/commands/DeleteRepeaterRequest.ts
index 16777578..66b58ccc 100644
--- a/packages/repeater/src/api/commands/DeleteRepeaterRequest.ts
+++ b/packages/repeater/src/api/commands/DeleteRepeaterRequest.ts
@@ -5,7 +5,8 @@ export class DeleteRepeaterRequest extends HttpRequest {
     super({
       url: `/api/v1/repeaters/${payload.repeaterId}`,
       method: 'DELETE',
-      payload: undefined
+      payload: undefined,
+      expectReply: false
     });
   }
 }
diff --git a/packages/scan/src/commands/StopScan.ts b/packages/scan/src/commands/StopScan.ts
index 0e671418..adc56c3a 100644
--- a/packages/scan/src/commands/StopScan.ts
+++ b/packages/scan/src/commands/StopScan.ts
@@ -4,7 +4,8 @@ export class StopScan extends HttpRequest {
   constructor(id: string) {
     super({
       url: `/api/v1/scans/${id}/stop`,
-      payload: undefined
+      payload: undefined,
+      expectReply: false
     });
   }
 }