JSON read issues from gwmsmon_site_summary

[sharad1126]

As Unified is using the gwmsmon provided jsons, so can you please look at this issue we are facing from time to time while reading the json -
https://cms-gwmsmon.cern.ch/totalview//json/site_summary

As the command we use is :
https://github.com/CMSCompOps/WmAgentScripts/blob/master/utils.py#L1914
it doesn't gives much details in error message except - No JSON object could be decoded.

I tried to use the same command on terminal and after a few retries got error message around 11am today morning, which tells that the certain column numbers in the JSON are not readable.
Error Message:
ValueError: Unterminated string starting at: line 1 column 434737 (char 434736)

The last time I see it from the unified logs is at Tue Feb 4 02:47:50 2020.
@z4027163 FYI