Barman check pg PostgresSQL: FAIELD que me falta realizar?

i have problem i make all steps good , when i run barman backup pg ? have error ERROR: Impossible to start the backup. Check the log for more details, or run 'barman check pg' ?how can i fix it ?

followed the entire video . but no connection b/w barman user and postgres db. following is the o/p barman check postgres-server. (name of my postgres-server) Server postgres-server: WAL archive: FAILED (please make sure WAL shipping is setup) PostgreSQL: FAILED directories: OK retention policy settings: OK backup maximum age: OK (no last_backup_maximum_age provided) compression settings: OK failed backups: OK (there are 0 failed backups) minimum redundancy requirements: OK (have 0 backups, expected at least 0) ssh: OK (PostgreSQL server) not in recovery: OK systemid coherence: OK (no system Id available) archiver errors: OK will appreciate a quick solution thanks in advance

barman is a horror to set up... the explanation on their website requires high knowledge of the system which is funny because obtaining such knowledge requires you to actually install and use barman to begin with. The parts that i die for are when they say 'put in the conf file xxxxxx' yeah... dude... there are multiple conf files which one should i put it in? Or when you encounter an error and you can't find any information anywhere how to fix I just... I can't! I freaking hate barman at this point.