Jukyung Lee

Hello, Dear community, I'm using the forum by self-hosting the Invision Community solution. And I have worked on design customization using design themes. However, If I download the A theme and try to upload it to the B theme, 500 Internal Server Error occurs as belows. 1. Clicked [Admin page > Appearance > Themes] menu 2. Upload a new version 3. 500 Internal Server Error Is it related to upgrading to version 4.6.12.1? I used to use the theme upload function well before, but suddenly it doesn't work since upgrade version. Can you let me know how to upload a new version? Thanks.