Error occurred when we try to use postAsync function of woocommerce on IOS build

We are using woocommerce and WordPress APIs and functions in our IONIC app everything looks good but the only thing does’ nt work is the “ postAsync ” function to place an order.

The most interesting part is everything looks good on my Android build but the issue is only appeared on my IOS build.

Please help me in this regards.Below you will find all the details for the issue.

401 (Unauthorized)
Response for preflight has invalid HTTP status code 401.

polyfills.js:3 OPTIONS http://gmontierth.com/wc-api/v3/orders?oauth_consumer_key=ck_b4ab2fc9ce7a3ef35afcd0ae19efb9618dfbb43f&oauth_nonce=TullzbCIfeJNAyGZbDJmFvi8WtxCdOdC&oauth_signature_method=HMAC-SHA256&oauth_timestamp=1521738924&oauth_version=1.0&oauth_signature=frmtTPmGFMwfHdG6B4K7PCvc8%2BG%2FYHFQPHcQ2HrDuNc%3D 401 (Unauthorized)

Failed to load http://gmontierth.com/wc-api/v3/orders?oauth_consumer_key=ck_b4ab2fc9ce7a3ef35afcd0ae19efb9618dfbb43f&oauth_nonce=TullzbCIfeJNAyGZbDJmFvi8WtxCdOdC&oauth_signature_method=HMAC-SHA256&oauth_timestamp=1521738924&oauth_version=1.0&oauth_signature=frmtTPmGFMwfHdG6B4K7PCvc8%2BG%2FYHFQPHcQ2HrDuNc%3D: Response for preflight has invalid HTTP status code 401.

* Request URL: http://gmontierth.com/wc-api/v3/orders?oauth_consumer_key=ck_b4ab2fc9ce7a3ef35afcd0ae19efb9618dfbb43f&oauth_nonce=PTiM8ejkm6NtPqKbKHf9lSbsiQNwI8kC&oauth_signature_method=HMAC-SHA256&oauth_timestamp=1521738622&oauth_version=1.0&oauth_signature=m%2BirT7fvahoH64FC1iXNPY0tzWthxU%2BRw6M%2FJHHFec0%3D
* Request Method: OPTIONS
* Status Code: 401 Unauthorized
* Remote Address: 99.198.97.114:80
* Referrer Policy: no-referrer-when-downgrade

this.WooCommerce.postAsync("orders", orderData).then((data) => {

• This topic was modified 6 years ago by Steven Stern (sterndata).
• This topic was modified 6 years ago by Steven Stern (sterndata).