"D:\PostgreSQL\11.8-6.1C\data\ "
Да это так, ошибка, но картина не меняется
D:\PostgreSQL\11.8-6.1C\bin>"c:\Program Files\pg_probackup\2.4.1\PostgreSQL11\pg_probackup" init -B D:\pg_probackup
INFO: Backup catalog 'D:/pg_probackup' successfully inited
D:\PostgreSQL\11.8-6.1C\bin>"c:\Program Files\pg_probackup\2.4.1\PostgreSQL11\pg_probackup" add-instance -B "D:\pg_probackup" -D "D:\PostgreSQL\11.8-6.1C\data\" --instance data
ERROR: required parameter not specified: --instance