CBOR parse error, `[json.exception.parse_error.110] parse error at byte 1`

Gotta keep an eye out for these. Occurring on OSG nodes. Sporadic, but may turn systemic.

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                                                   Welcome to ApplicationMgr (GaudiCoreSvc v36r0)
                                          running on osg-pilots-highlim-b4b7c6b8b-cp7xb on Thu Oct 28 23:40:55 2021
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Warning in <TGeoManager>: Changing system of units to ROOT units (cm, s, GeV).
GeoSvc               INFO loading geometry from file:  '/opt/detector/athena-canyonlands-v1.2/share/athena/athena.xml'
DD4hep           WARN  ++ STD conditions NOT defined by client. NTP defaults taken.
Loading calibrations/materials-map.cbor from https://eicweb.phy.anl.gov/EIC/detectors/athena/uploads/cff8f8d5919d8e78561e8caf2b4fad2b/material-maps.cbor
GeoSvc               INFO DD4Hep geometry SUCCESSFULLY built
GeoSvc               INFO loading materials map from file:  ' 'materials':'calibrations/materials-map.cbor''
GeoSvc              FATAL in sysInitialize(): standard std::exception is caught
GeoSvc              ERROR [json.exception.parse_error.110] parse error at byte 1: syntax error while parsing CBOR value: unexpected end of input