Fix.

node_modules/request-promise-core/lib/errors.js

@@ -0,0 +1,62 @@
+'use strict';
+
+
+function RequestError(cause, options, response) {
+
+    this.name = 'RequestError';
+    this.message = String(cause);
+    this.cause = cause;
+    this.error = cause; // legacy attribute
+    this.options = options;
+    this.response = response;
+
+    if (Error.captureStackTrace) { // required for non-V8 environments
+        Error.captureStackTrace(this);
+    }
+
+}
+RequestError.prototype = Object.create(Error.prototype);
+RequestError.prototype.constructor = RequestError;
+
+
+function StatusCodeError(statusCode, body, options, response) {
+
+    this.name = 'StatusCodeError';
+    this.statusCode = statusCode;
+    this.message = statusCode + ' - ' + (JSON && JSON.stringify ? JSON.stringify(body) : body);
+    this.error = body; // legacy attribute
+    this.options = options;
+    this.response = response;
+
+    if (Error.captureStackTrace) { // required for non-V8 environments
+        Error.captureStackTrace(this);
+    }
+
+}
+StatusCodeError.prototype = Object.create(Error.prototype);
+StatusCodeError.prototype.constructor = StatusCodeError;
+
+
+function TransformError(cause, options, response) {
+
+    this.name = 'TransformError';
+    this.message = String(cause);
+    this.cause = cause;
+    this.error = cause; // legacy attribute
+    this.options = options;
+    this.response = response;
+
+    if (Error.captureStackTrace) { // required for non-V8 environments
+        Error.captureStackTrace(this);
+    }
+
+}
+TransformError.prototype = Object.create(Error.prototype);
+TransformError.prototype.constructor = TransformError;
+
+
+module.exports = {
+    RequestError: RequestError,
+    StatusCodeError: StatusCodeError,
+    TransformError: TransformError
+};