got crashes reported in ALF UI, but there is no test case exists in 'log directory'

[Cwolf9]

Hi Seulbae Kim,
I was in the master branch (commit id: fd16457), following the README.md to run the fuzzer, and a day later, the AFL UI informed me that an assertion error had been found and that the test cases were stored in the /tmp/mosbench/tmpfs-separate/10/log directory.
However, I do not have these files in the /tmp/mosbench/tmpfs-separate/ directory. Why is this?
In addition, since I run it as the root user, I should have permission to operate the directory, but I did not see any log files.
Some running screenshots are as follows:
AFL UI results:

The contents of the /tmp/mosbench/tmpfs-separate/directory after the error was found:

The execution result of command sudo ./prepare_fuzzing.sh, according to the README.md: