ArmoryDB
Thanks for your reply.
After running ArmoryDB, find the cause in the debug log.
logging in /home/ubuntu/.armory/dbLog.txt
-INFO - 22:47:35: (main.cpp:32) Running on 4 threads
-INFO - 22:47:35: (main.cpp:33) Ram usage level: 4
-INFO - 22:47:35: (BlockUtils.cpp:915) blkfile dir: /home/ubuntu/.bitcoin/blocks
-INFO - 22:47:35: (BlockUtils.cpp:916) lmdb dir: /home/ubuntu/.armory/databases
-INFO - 22:47:35: (lmdb_wrapper.cpp:388) Opening databases...
-INFO - 22:47:35: (BDM_Server.h:263) Listening on port 9001
-INFO - 22:47:35: (BlockUtils.cpp:1108) Executing: doInitialSyncOnLoad
-ERROR - 22:47:35: (BDM_Server.cpp:1270) There is already a process listening on 127.0.0.1:9001
-ERROR - 22:47:35: (BDM_Server.cpp:1272) ArmoryDB cannot start under these conditions. Shutting down!
-ERROR - 22:47:35: (BDM_Server.cpp:1273) Make sure to shutdown the conflicting processbefore trying again (most likely another ArmoryDB instance).
I already restarted the computer, and now it looks normal.
Thank you very much.