public function changePassword(Request $request)
    {
        try{

            //check user token
            $user_model = JWTAuth::parseToken()->authenticate();

            $validator = Validator::make(
                $request->all(),
                [
                    'email' => 'exists:users,email|required',
                    'current_password' => 'required',
                    'new_password' => 'required|min:8',
                    'confirm_password' => 'same:new_password'
                ]
            );

            if($validator->fails()){
                // Validation failed - send errors in response
                return $this->sendErrorResponse(['errors' => $validator->getMessageBag()]);
            }
            else{
                $user = User::where('email',$request->json('email'))->first();

                // Validation Successful
                if (!\Hash::check($request->json('current_password'), $user->password)){
                    return $this->sendErrorResponse([
                        'errors' => [
                            'current_password' => ['Your current password is incorrect.']
                        ]
                    ]);
                }
                $user->password =  \Hash::make($request->json('new_password'));

                //Update user password
                if($user->save()){

                    $response_array = $user->toArray();

                    return $this->sendSuccessResponse(['message' => 'Password changed successfully.','data' => $response_array],true);

                }else{

                    return $this->sendErrorResponse(['message' => array("message" => 'Oops!! error while changing password.')],true);
                }

            }

        }catch(Exception $ex){

            return $this->sendErrorResponse(['errors' => array("message" =>"Error !! Please provide data. (".$ex->getMessage().") in file ".$ex->getFile()." on line".$ex->getLine())],true);

        }

    }