Graphql build has been failing intermittently in Windows

[kalaiyarasiganeshalingam]

Description:
Graphql build has been failing intermittently due to getting nil value from string arguments. Check the following logs to get the error log.
https://github.com/ballerina-platform/module-ballerina-graphql/runs/7189193929?check_suite_focus=true#step:4:255
https://github.com/ballerina-platform/module-ballerina-graphql/runs/7226165147?check_suite_focus=true#step:4:232

Describe your task(s)
Count is getting from the string argument in the file package and grapql is using this function:

isolated function buildWindowsPath(string... parts) returns string|Error {
    int count = parts.length();
    ....
}

The build fails with the following error from the above coding:

{ballerina}TypeCastError {"message":"incompatible types: '()' cannot be cast to 'long'"}

As per this error message, we have a chance to get this error if the value of the parts is nil. But in graphql, some values of this are hard-coded. So, there is no chance to get nil.

isolated function getGraphQLDocumentFromFile(string fileName) returns string|error {
    string path = check file:joinPath("tests", "resources", "documents", fileName);
    return io:fileReadString(path);
}

And, locally tested the Graphql package on Windows10 but couldn't reproduce this error. So, couldn't find the cause for this build failure.

@warunalakshitha @MaryamZi We want to know if this build is affected by any lang or runtime changes. Can you help us?

[warunalakshitha]

I am closing this since this behaviour have not seen in recently. Please reopen if you have further queries on this.