Issue when creating a BTable using ValueCreator

[dilanSachi]

Description:
I have types defined as follows and a table as a field.

public type MQRFH2Field record {|
    readonly string folder;
    readonly string 'field;
    int|float|byte|byte[]|string value;
|};

public type MQRFH2 record {|
    table<MQRFH2Field> key(folder, 'field) fieldValues = table [];
|};

In the runtime, I'm trying to create a BTable fieldValues and populate it as follows.

BTable fieldTable = ValueCreator.createTableValue(TypeCreator.createTableType(TypeCreator.createRecordType("MQRFH2Field", getModule(), 0, false, 0), false));

BMap<BString, Object> field = ValueCreator.createRecordValue(getModule(), "MQRFH2Field");
field.put(StringUtils.fromString("folder"), StringUtils.fromString(folder.getName()));
field.put(StringUtils.fromString("field"), StringUtils.fromString(child.getName()));
field.put(StringUtils.fromString("value"), getBValueForMQObjectValue(child.getValue()));
fieldTable.add(field);

Then I pass it to the Ballerina side and when testing this, it ends with a exception. However, if I print the table, the values are there.

io:println(headers[0].fieldValues); --> [{"folder":"mcd","field":"Msd","value":"TestMcdValue"},{"folder":"jms","field":"Dlv","value":134}]

MQRFH2Field[] fieldArray = headers[0].fieldValues.toArray(); ----> LN 260 is this line.

error("java.lang.NullPointerException",message="Cannot invoke "io.ballerina.runtime.api.types.Type.isNilable()" because "memberType" is null")
                                callableName: toArray moduleName: ballerina.lang.table.0 fileName: table.bal lineNumber: 399
                                callableName: publishSubscribeWithHeadersTest moduleName: ballerinax.ibm.ibmmq$test.0.tests.topic_publisher_subscriber_tests fileName: tests/topic_publisher_subscriber_tests.bal lineNumber: 260

Related discord thread -> https://discord.com/channels/957996897782616114/1170261923946831922/1170261923946831922

[github-actions]

This issue is NOT closed with a proper Reason/ label. Make sure to add proper reason label before closing. Please add or leave a comment with the proper reason label now.

      - Reason/EngineeringMistake - The issue occurred due to a mistake made in the past.
      - Reason/Regression - The issue has introduced a regression.
      - Reason/MultipleComponentInteraction - Issue occured due to interactions in multiple components.
      - Reason/Complex - Issue occurred due to complex scenario.
      - Reason/Invalid - Issue is invalid.
      - Reason/Other - None of the above cases.

[dilanSachi]

Should be created in lang