Table Grid Next Generation Java API Cannot work

[Yew Teng Ui]

I'm trying the idalko TGNG Java API from https://docs.idalko.com/tgng/display/TGNG/Java+API.

But I keep getting errors as below.

Message:

com.idalko.tgng.jira.server.api.GridException: error.expected.jsobject

Stack:

com.idalko.tgng.jira.server.api.GridServiceImpl$.com$idalko$tgng$jira$server$api$GridServiceImpl$$handleErrors(GridServiceImpl.scala:102)
com.idalko.tgng.jira.server.api.GridServiceImpl.readFieldData(GridServiceImpl.scala:38)
com.idalko.tgng.jira.server.api.GridService$readFieldData.call(Unknown Source)
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:151)
script_5bc04cec93413a2bd6b3297cd681bec0.run(script_5bc04cec93413a2bd6b3297cd681bec0.groovy:27)