what now? Everything was working what is this and how to fix?

[p3j6v9]

librealsense	2.56.3 RELEASE
OS	Windows

Intel RealSense Viewer / Depth Quality Tool has crashed with the following error message:

RealSense error calling rs2_create_context_ex(api_version:25603, json_settings:{):
    failed to load configuration file (C:\Users\J.Ra\AppData\Roaming\realsense-config.json): [json.exception.parse_error.101] parse error at line 1, column 1: attempting to parse an empty input; check that your input string or stream contains the expected JSON

[p3j6v9]

I have 2 x D455 cameras. tring to get the to work

[MartyG-RealSense]

Hi @p3j6v9 Please first try using the instructions at #13457 (comment) to find the realsense-config.json file in the Windows /AppData/Roaming folder and delete the .json file.