Multiple Test Cases in a Test Suite can share a Excel file to read/write data dynamically

When I run the project with Katalon Studio 5.10.1, I got the following messages in the Consle:

2019-01-12 06:42:19.205 INFO  c.k.katalon.core.main.TestCaseExecutor   - --------------------
2019-01-12 06:42:19.212 INFO  c.k.katalon.core.main.TestCaseExecutor   - START Test Cases/TC1
Caught: BUG! exception in phase 'semantic analysis' in source unit '/Users/urayamakazuaki/katalon-workspace/MultipleTestCasesSafelyWriteIntoExcelFile/Test Listeners/MyTestListener.groovy' ClassNode#getTypeClass for MyTestListener is called before the type class is set 
BUG! exception in phase 'semantic analysis' in source unit '/Users/urayamakazuaki/katalon-workspace/MultipleTestCasesSafelyWriteIntoExcelFile/Test Listeners/MyTestListener.groovy' ClassNode#getTypeClass for MyTestListener is called before the type class is set 
	at com.kms.katalon.core.ast.AstTextValueUtil.getTextValue(AstTextValueUtil.java:252)
...

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