[BP 6.6.3] on unexpected metakv value, /analytics/node/diagnostics endpoint fails

2021-05-14T21:16:51.170+00:00 WARN CBAS.servlet.NodeDiagnosticsServlet [HighPriorityHttpExecutor(port:8095)-0] exception while servicing request; returning 500

com.fasterxml.jackson.core.JsonParseException: Unexpected character ('-' (code 45)): Expected space separating root-level values

 at [Source: (byte[])"2021-05-14T20:59:02.832Z"; line: 1, column: 6]

	at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:2337) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:710) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.core.base.ParserMinimalBase._reportUnexpectedChar(ParserMinimalBase.java:635) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.core.base.ParserMinimalBase._reportMissingRootWS(ParserMinimalBase.java:682) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._verifyRootSpace(UTF8StreamJsonParser.java:1693) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._parsePosNumber(UTF8StreamJsonParser.java:1433) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:868) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:762) ~[jackson-core-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.databind.ObjectMapper._readTreeAndClose(ObjectMapper.java:4622) ~[jackson-databind-2.12.3.jar:2.12.3]

	at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:3056) ~[jackson-databind-2.12.3.jar:2.12.3]

	at com.couchbase.analytics.servlet.NodeDiagnosticsServlet.getResultJson(NodeDiagnosticsServlet.java:142) ~[cbas-server.jar:7.0.0-1536090190]

	at com.couchbase.analytics.servlet.NodeDiagnosticsServlet.get(NodeDiagnosticsServlet.java:92) [cbas-server.jar:7.0.0-1536090190]

	at org.apache.hyracks.http.server.AbstractServlet.handle(AbstractServlet.java:89) [hyracks-http.jar:7.0.0-1536090190]

	at com.couchbase.analytics.servlet.AuthenticatedServlet.handle(AuthenticatedServlet.java:96) [cbas-server.jar:7.0.0-1536090190]

	at org.apache.hyracks.http.server.HttpRequestHandler.handle(HttpRequestHandler.java:83) [hyracks-http.jar:7.0.0-1536090190]

	at org.apache.hyracks.http.server.HttpRequestHandler.call(HttpRequestHandler.java:68) [hyracks-http.jar:7.0.0-1536090190]

	at org.apache.hyracks.http.server.HttpRequestHandler.call(HttpRequestHandler.java:37) [hyracks-http.jar:7.0.0-1536090190]

	at java.util.concurrent.FutureTask.run(Unknown Source) [?:?]

	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]

	at java.lang.Thread.run(Unknown Source) [?:?]