Have you edited the less-files of your theme? It would seem that they are not getting compiled as CSS because the link to your css leads to a blank page: http://murmurations.cloud/ojs/index.php/murmurations/$$$call$$$/page/page/css?name=bootstrap
There could be an error in one of the less files that is preventing them to be compiled.
Or, could be this: Problem with css - #23 by NateWr