I believe vmshost now offers PHP 7.2 and suggest you use that version. Version 7.0 and 7.1 may be dropped.
Do you have a URL to where you got the skin from? Is it freeware or payware? The skin probably shouldn’t be installed in “vCrewMini-phpvms-skin-master”. Try installing the skin to “vCrewMini” instead or review the install instructions that came with the skin.
According to the skin readme file, it shouldn’t be installed in “vCrewMini-phpvms-skin-master”. I suggest you re-read the readme file and place the files in the correct location… lib/skins/vcrew_mini_v1