error message - upload downloaded H5P files

We are currently experiencing a problem where we receive an error message when we try to upload downloaded H5P files (content from H5p.com) to the Moodle content repository. According to our research, the error message indicates that only content types with Core API version 1.28 can be used, but a 1.28 plugin does not yet exist, which is why we cannot update the Moodle plugin to this version. Does anyone here have any tips on how to solve this problem?