CLONE - [System Test] Xattr parsing errors seen in projector logs

Build : 5.5.0-2958 (RC4)
Test : -test tests/integration/test_allFeatures_vulcan.yml -scope tests/integration/scope_Xattrs_Vulcan.yml
Scale : 3
Iteration : 6 (2d 20h)

Projector log on atleast 2 data nodes - 172.23.108.103 and 172.23.108.104 is filled up with errors like the following :

2018-07-12T21:36:34.565-07:00 [Error] Error parsing XATTR <ud>(_sync)</ud> for <ud>(E002B342-91_2804422)</ud>: unexpected end of JSON input
2018-07-12T21:36:34.566-07:00 [Error] Error parsing XATTR <ud>(_sync)</ud> for <ud>(E002B342-91_2804422)</ud>: unexpected end of JSON input
2018-07-12T21:36:34.566-07:00 [Error] Error parsing XATTR <ud>(_sync)</ud> for <ud>(E002B342-91_2804422)</ud>: unexpected end of JSON input
2018-07-12T21:36:34.566-07:00 [Error] Error parsing XATTR <ud>(_sync)</ud> for <ud>(E002B342-91_2804422)</ud>: unexpected end of JSON input

It does not cause any visible damage to the system, but need to check why is this error logged