Why am I seeing START_REPLICATION 042000000 TIMELINE 1

FATAL: could not start WAL streaming: ERROR: replication slot XXX start_replication slot slot pg2 does not exist pg_basebackup: could not send replication command START_REPLICATION: ERROR: replication slot pg2 does not start replication slot postgres Card Interface Slot Assignment SYSTEM A Slot Card Type And Ports start replication to the next node after replication has completed to

cukong 88 slot login * CREATE_REPLICATION_SLOT SLOT slot PHYSICAL * create_replication_slot * START_REPLICATION