Install on ubuntu

If you have a good workflow to help me to install the repository , the client and aws portal link on ubuntu18.04 i cant install i have this message

Seems to be an issue with the Database. To troubleshoot:

In the database logs, if you see something similar to “Detected unclean shutdown - mongod.lock is not empty”. The mongo.lock file is stored in the data folder. The Database will refuse to start if the lock file is present. This mean that if the system in question is not shut down correctly the database will refuse to start. Information can be found in the official documentation (https://docs.mongodb.com/manual/tutorial/recover-data-following-unexpected-shutdown/).

Thanks
Karpreet