Translations: Common problems and resolutions/15/en
I get "java.lang.NullPointerException" when trying to open http://localhost:27876/ or http://127.0.0.1:27876
If your Java version is already up to date, this may indicate your blockchain data has been corrupted. Often stopping and restarting your server is all it takes to resolve this condition. See also "My blockchain files keep getting corrupted".