Tomcat getting 503 error

I could recall some similar issue earlier as well.

Can you you:

• Look at your error.log during start up and look for exceptions and error messages. These exceptions and error messages will clue you into what the problem is.
• If you don't see error messages log into felix and see if you have any bundles that aren't starting and try to manually start them and watch the error logs while you are manually starting them

-Kautuk

04-Sep-2018 13:10:12.722 INFO [http-nio-4509-exec-1] org.apache.catalina.core.ApplicationContext.log granite: Setting sling.home=/crx-quickstart (servlet parameter sling.home)

04-Sep-2018 13:10:12.723 SEVERE [66] org.apache.catalina.core.ApplicationContext.log granite: Failed to start Apache Sling in /crx-quickstart

java.lang.IllegalArgumentException: Sling Home /crx-quickstart/launchpad cannot be created as a directory

at org.apache.sling.launchpad.base.shared.Loader.getLaunchpadHomeFile(Loader.java:387)

at org.apache.sling.launchpad.base.shared.Loader.<init>(Loader.java:80)

at org.apache.sling.launchpad.webapp.SlingServlet$3.<init>(SlingServlet.java:306)

at org.apache.sling.launchpad.webapp.SlingServlet.startSling(SlingServlet.java:306)

at org.apache.sling.launchpad.webapp.SlingServlet.access$000(SlingServlet.java:58)

at org.apache.sling.launchpad.webapp.SlingServlet$2.run(SlingServlet.java:289)

at java.lang.Thread.run(Thread.java:748)