Honeywell integration

Hello,

I installed the honeywell home module and tried to register my account between Symcon and Honeywell via the button as is stated in the documentation.

However, after logging in and selecting the device (thermostat) , I get this error code back from the browser:

Warning: file_get_contents(https://oauth.ipmagic.de/access_token/honeywell): Failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error in C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php on line 206 Fatal error: Uncaught TypeError: json_decode(): Argument #1 ($json) must be of type string, false given in C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php:208 Stack trace: #0 C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php(208): json_decode(false) #1 C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php(182): HoneywellCloud->FetchRefreshToken(‚tSSONNpT‘) #2 C:\Windows\System32\-(3): HoneywellCloud->ProcessOAuthData() #3 C:\Windows\System32\-(4): OAuthInstance->ProcessOAuthData() #4 {main} thrown in C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php on line 208Warning: file_get_contents(https://oauth.ipmagic.de/access_token/honeywell): Failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error in C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php on line 206 Fatal error: Uncaught TypeError: json_decode(): Argument #1 ($json) must be of type string, false given in C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php:208 Stack trace: #0 C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php(208): json_decode(false) #1 C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php(182): HoneywellCloud->FetchRefreshToken(‚tSSONNpT‘) #2 C:\Windows\System32\-(3): HoneywellCloud->ProcessOAuthData() #3 C:\Windows\System32\-(4): OAuthInstance->ProcessOAuthData() #4 {main} thrown in C:\ProgramData\Symcon\modules\.store\fonzo.honeywell\Honeywell Cloud\module.php on line 208

What to do now?

Thanks in advance