Netflix Addon Notification Error: Exception: KeyError

*I'm submitting a ...*
- [ x] bug report
- [ ] feature request
- [ ] support request

## General infomration

### Prerequisites

* [ x] Are you running the latest version?

### Description

[Description of the bug or feature]
When I start the application, it asks me to login. After inputting my valid credentials, the application pops up the error notification screen that states "Exception: KeyError" and to review the kodi.log file.
### Steps to Reproduce

1. [First Step] Install most recent addon
2. [Second Step] Login with your account credentials
3. [and so on...] immediately met with error

**Expected behavior:** [What you expected to happen]
able to login to netflix successfully and able to select account to use to view categories.
**Actual behavior:** [What actually happened]
I am met with the "Exception: KeyError"
## Context (Environment)
RaspberryPi - Libreelec && Windows 10
### Installation

* [x ] I installed the plugin via zip from the Releases page
* [ ] I´m using the Netflix Repo
* [ ] I´m using a different source (Please tell which)

### Operating System

* [ ] Linux (x86/x64)
* [ ] OSX (x86/x64)
* [x ] Windows (x86/x64)
* [x ] Linux (ARM)
* [ ] Android

#### Additional informatin on the environment

[Descripe your environment a bit more detailed, are you using LibreElec f.e.]
1) LibreElec on RaspberryPi 2b and 3
2) Windows 10 with Kodi installed from windows store
3) Windows 10 with Kodi installed from direct download from kodi webpage.

## Debug log

[Please include a link to your debug log (use something like [http://sprunge.us/](http://sprunge.us/)) or similar, please do not paste]
[kodi.log](https://github.com/asciidisco/plugin.video.netflix/files/4799950/kodi.log)
## Other information

[e.g. detailed explanation, related issues, suggestions how to fix, links for us to have context, etc.]
I am not sure, I have searched google for similar errors and some mention something about netflix headers being sent and trying to add a file called NetflixSession.py
### Screenshots

[Please add a screenshot if that helps understanding your problem]

[You can erase any parts of this template not applicable to your Issue.]

Start by reviewing the linked kodi.log and tracing the reported error through the application’s startup and login flow. Reproduce the login with the addon; done means valid credentials no longer trigger the KeyError notification and the user can select an account and view categories.

Written by the indexing model from the issue text.