During testing, I noticed that the PDB-Dev PDBDEV_00000001 link to HHpred is out of date for both full validation pdf report and summary pdf report. It links to https://toolkit.tuebingen.mpg.de/hhpred which shows Page not found! 404 error You have reached a domain of unknown function!
Current working link is https://toolkit.tuebingen.mpg.de/tools/hhpred