### System information - **OS Platform and Distribution (e.g., Linux Ubuntu 16.04)**: - **Modin version** (`modin.__version__`): d8d58bbdbb0986770bf1903f8d4077849b15e71f - **Python version**: - **Code we can use to reproduce**: <!-- You can obtain the Modin version with python -c "import modin; print(modin.__version__)" --> ### Describe the problem <!-- Describe the problem clearly here. --> The pop-up window does not show the source code of the function under test.  ### Source code / logs <!-- Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached. Try to provide a reproducible test case that is the bare minimum necessary to generate the problem. -->
