Grav One Page fails repeatedly

[Sun Nov 10 11:35:29.146081 2019] [autoindex:error] [pid 6947:tid 47433797396224] [client 45.16.200.122:60612] AH01276: Cannot serve directory /home/USER/public_html/grav/user/themes/gateway/img/: No matching DirectoryIndex (index.php,index.html,index.htm) found, and server-generated directory index forbidden by Options directive, referer: http://USER.com/grav/default

This is found when trying to use the One Page install option of grav. Something wrong with the zip file.