FAIL! : qmltest::Bars3D Common::test_3_change_invalid_common() Uncaught exception: Value is null and could not be converted to an object

agent:2023/04/12 20:03:19 build.go:402: 27: ********* Start testing of qmltest *********
agent:2023/04/12 20:03:19 build.go:402: 27: Config: Using QtTest library 6.6.0, Qt 6.6.0 (arm64-little_endian-lp64 shared (dynamic) release build; by Apple LLVM 14.0.0 (clang-1400.0.29.202)), macos 12.6
agent:2023/04/12 20:03:19 build.go:402: 27: PASS   : qmltest::Bars3D Common::initTestCase()
agent:2023/04/12 20:03:19 build.go:402: 27: FAIL!  : qmltest::Bars3D Common::test_3_change_invalid_common() Uncaught exception: Value is null and could not be converted to an object
agent:2023/04/12 20:03:19 build.go:402: 27:    Loc: [/Users/qt/work/qt/qtdatavis3d/tests/auto/qmltest/bars3d/tst_basic.qml(228)]
agent:2023/04/12 20:03:19 build.go:402: 27: PASS   : qmltest::Bars3D Common::cleanupTestCase()
agent:2023/04/12 20:03:19 build.go:402: 27: Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 51ms
agent:2023/04/12 20:03:19 build.go:402: 27: ********* Finished testing of qmltest *********
agent:2023/04/12 20:03:19 build.go:402: 27: qt-testrunner.py     INFO: Test process exited with code: 1
agent:2023/04/12 20:03:19 build.go:402: 27: qt-testrunner.py     INFO: Re-running testcase: Bars3D Common::test_3_change_invalid_common
agent:2023/04/12 20:03:19 build.go:402: 27: qt-testrunner.py    DEBUG: Running test command line: ['/Users/qt/work/qt/qtdatavis3d_standalone_tests/tests/auto/qmltest/tst_qmltest', '-o', '/Users/qt/work/testresults/tst_qmltest-1681329799512.xml,xml', '-o', '/Users/qt/work/testresults/tst_qmltest-1681329799512.junit.xml,junitxml', '-o', '/Users/qt/work/testresults/tst_qmltest-1681329799512.txt,txt', '-o', '-,txt', 'Bars3D Common::test_3_change_invalid_common']