Dear 陈坤, I guess, you missed prepared source code. Please, refer https://klever.readthedocs.io/en/latest/deploy.html#klever-build-bases So, you need to prepare the target source code for verification - obtain a build base. Best regards, Pavel 11.04.2023 04:39, 陈坤 пишет: > How can I test other codes? I can only test the default 3 drivers, the > rest of the code will prompt "ValueError: Cannot find fragments, files > or functions for the following expressions". >> _______________________________________________ > ldv-project mailing list > ldv-project at linuxtesting.org > http://linuxtesting.org/cgi-bin/mailman/listinfo/ldv-project