If you were getting the error The operation couldn’t be completed. Unable to locate a Java Runtime. when trying to run /usr/libexec/java_home, then check this article below to solve the issue. Apple doesn't let me post the link, so you will have to remove the space after '.net' and paste the whole link into the browser.
knasmueller.net /how-to-install-java-openjdk-15-on-macos-big-sur
aleks_dev
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Did you add Capabilities: BackgroundModes and PushNotifications?