Title: ERROR
Last modified: November 4, 2016

---

# ERROR

 *  Resolved [MELAS007](https://wordpress.org/support/users/melas007/)
 * (@melas007)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/error-779/)
 * Dear,
 * I got this issue :
    /pnfw/register/?token=cl2m0OT411g:APA91bHqq7yoAVrPYMvxsKvO61PmzrANPQ2s-
   nM0XDs1W7-Kx1Ys3hari4XGNCRxaTWB9gQ5XS2y1Jxdsv83wkcIR5anmPANGNR_RyDIH1ifqh01SqnP_b9AcWWgqpy2RUFEKBOD0K3h&
   os=android API Error (500) from IP address 196.130.242.62: Internal Server Error,
   Mandatory parameter os missing.
 * from logs.
    What can i do ?
 * thank and regards,

Viewing 1 replies (of 1 total)

 *  Plugin Author [Delite Studio](https://wordpress.org/support/users/delitestudio/)
 * (@delitestudio)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/error-779/#post-8404818)
 * Hello,
 * you must follow [documentation for the Register API](https://www.delitestudio.com/wordpress/push-notifications-for-wordpress/documentation/#APIs).
 * First of all you have to do an HTTP POST call with parameters in the body and
   you must pay attention to use all the mandatory parameters (os and token).
 * Hope it helps.

Viewing 1 replies (of 1 total)

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 * 1 reply
 * 2 participants
 * Last reply from: [Delite Studio](https://wordpress.org/support/users/delitestudio/)
 * Last activity: [9 years, 6 months ago](https://wordpress.org/support/topic/error-779/#post-8404818)
 * Status: resolved