Debian stretch problem reported by Xaviou duplicated.
https://apt.jenslody.de/stable/ stretch main
W: Invalid 'Date' entry in Release file /var/lib/apt/lists/apt.jenslody.de_stable_dists_stretch_Release
@Xaviou and @stahta01 thanks for reporting.
The issue should be fixed now.
Unfortunately I have to pin my repo on debian testing, otherwise codeblocks from main-repo is installed.
I created "/etc/apt/preferences.d/10codeblocks" with the following content:
Package: *
Pin: origin apt.jenslody.de
Pin-Priority: 999