I found the problem, I hope someone can confirm, bintray has been closed, https://stackoverflow.com/questions/67804266/could-not-get-https-dl-bintray-com-lukaville-maven-com-nbsp-library-1-09
following the JFrog official blog https://jfrog.com/blog/into-the-sunset-bintray-jcenter-gocenter-and-chartcenter/ "May 1st, 2021 Bintray services will no longer be available. GoCenter, and ChartCenter services will no longer be available to non-Artifactory clients. (ConanCenter and JCenter are not affected)." I think that the zeppelin nightly build is compiled so the question is: what other repository for pty4j is used to build the package? Thanks a lot, Alessandro [...] > Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d) > Maven home: /usr/local/Cellar/maven/3.8.1/libexec > Java version: 1.8.0_291, vendor: Oracle Corporation, runtime: > /Library/Java/JavaVirtualMachines/jdk1.8.0_291.jdk/Contents/Home/jre > Default locale: en_IT, platform encoding: UTF-8 > OS name: "mac os x", version: "10.16", arch: "x86_64", family: "mac" > > Alessandro > > >