creating hourly resolution outputfile not working

[a-linke]

Describe_the_bug

• when I run python ramp.py -i ramp/input_files/chps -n 1 -y 2022 the calculation of the demand profile in minute resolution works fine, but there is no outputfile in hourly resolution
• the full error message can be seen in the screenshot

Checklist to make sure that the bug report ist complete:

• [x] Command: python ramp.py -i ramp/input_files/chps -n 1 -y 2022
• [x] OS: win 10 64 bit
• [x] Branch: feature/copy-change-output-format
• [ ] Commit number: (The output of git log -1 --pretty=format:"%H")
• [x] If applicable: Copy paste full error message
• [x] If applicable: Share screenshots/images of your problem
• [ ] If applicable: Share used input data (you can drag and drop zip files in the issue, please mind confidential data and prefer email in that case!)