Long time no see.
I am still thinking that SSIS is not installed on your machine. Please find below how to check what SQL Server components are installed.
You can launch SQL Server Discovery Report – Determining what SQL Server Components are Installed
Location on the hard drive:
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Microsoft SQL Server 2017\Configuration Tools
Good link on the subject: sql-server-2012-discovery-report-determining-what-sql-server-components-are-installed
You should see something like this:
Just one Catalog could be created., even though the entry in the Object Explorer says ... Catalogs plural.