Okay, I did that, but now I get a new error:
:AppRunner: Total Panda3D disk space used: 146 MB
:AppRunner: Configured max usage is: 2048 MB
:HostInfo: Downloading contents file [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x49caa00] begin GET [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x49caa00] Unable to verify identity of raw.githubusercontent.com:443, verify error code 20
:HostInfo(warning): Could not contact download server at https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
:HostInfo(warning): Status code = 14 SSL invalid server certificate
:HostInfo: Retrying (1)...
:downloader: [0x49e4400] begin GET [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x49e4400] Unable to verify identity of raw.githubusercontent.com:443, verify error code 20
:HostInfo(warning): Could not contact download server at https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
:HostInfo(warning): Status code = 14 SSL invalid server certificate
:HostInfo: Retrying (2)...
:downloader: [0x399a000] begin GET [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x399a000] Unable to verify identity of raw.githubusercontent.com:443, verify error code 20
:HostInfo(warning): Could not contact download server at https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
:HostInfo(warning): Status code = 14 SSL invalid server certificate
:HostInfo(warning): Unable to download https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
:HostInfo: Downloading contents file [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x399a000] begin GET [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x399a000] Unable to verify identity of raw.githubusercontent.com:443, verify error code 20
:HostInfo(warning): Could not contact download server at https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
:HostInfo(warning): Status code = 14 SSL invalid server certificate
:HostInfo: Retrying (1)...
:downloader: [0x39cca00] begin GET [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x39cca00] Unable to verify identity of raw.githubusercontent.com:443, verify error code 20
:HostInfo(warning): Could not contact download server at https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
:HostInfo(warning): Status code = 14 SSL invalid server certificate
:HostInfo: Retrying (2)...
:downloader: [0x718ca00] begin GET [ https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265 ]
:downloader: [0x718ca00] Unable to verify identity of raw.githubusercontent.com:443, verify error code 20
:HostInfo(warning): Could not contact download server at https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
:HostInfo(warning): Status code = 14 SSL invalid server certificate
:HostInfo(warning): Unable to download https://raw.githubusercontent.com/legalian/HS/master/contents.xml?1417725265
Unknown package MyPackage, version "0.0"