Extraction not working

Hello – I recently upgraded a development site before I started the transfer process to move it to another server. I had done a few pre-flight tests using duplicator and it worked GREAT! After the upgrade I went to move the site to the live server and the first screen of the installer would not work at all. It’s like the javascript was broken. I tried on two other servers and had the same result. I can share a link with the developer. My hope is this is a bug that resulted from the upgrade.. maybe it will get fixed in short order. Please let me know.