neo4j console

ar/lib/neo4j/data/databases/store_lock. Please ensure no other process is using this database, and that the directory is writable (required even for read-only access)".
  at org.neo4j.server.exception.ServerStartupErrors.translateToServerStartupError(ServerStartupErrors.java:45)
  at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:187)
  at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:124)
  at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:91)
  at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:32)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.server.database.LifecycleManagingDatabase@3daf7722' was successfully initialized, but failed to start. Please see the attached cause exception "Store and its lock file has been locked by another process: /var/lib/neo4j/data/databases/store_lock. Please ensure no other process is using this database, and that the directory is writable (required even for read-only access)".

ps aux | grep "org.neo4j.server"

sudo kill -9 neo4j_process_id