Getting error while running gta.setup

[PranavR0411]

Describe the error
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NOTE: This is for errors in fermipy and not for questions about data analysis or issues with fermitools.

To Reproduce

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Expected behavior
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Log files
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Environment (please complete the following information):

• OS: (e.g. MacOS Monterey version 12.3.1)
• Output of uname -a
• fermipy, fermitools, and fermitools-data versions (for exameple, fermipy 1.0.1, fermitools 2.0.8)

Additional context
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[PranavR0411]

I was trying to run gta.setup(). I am getting a list index out of range error related to the ltcube file. In the config.yaml file i hvae mentioned null in the ltcube place. I have attached a screenshot of the error.
https://drive.google.com/file/d/1MZZuDMVVEPnLyFFv3vH2eRen9mk9nRTW/view?usp=sharing

OS: Redhat 7.8
"Linux nmpost034 3.10.0-1127.13.1.el7.x86_64 #1 SMP Fri Jun 12 14:34:17 EDT 2020 x86_64 x86_64 x86_64 GNU/Linux"
fermipy 1.2,

[nyctophile-aayu]

I am having the same issue and the exact same place, irrespective of the source or time period. In fact, I have re-installed the fermipy, still the same issue. I am using:
fermipy version 1.2.0
ScienceTools version 2.2.0

Please suggest what's wrong???