Hi @Jamal NUMAN ,
SSMS 18.7.1 is the latest version of SSMS, we suggest you using it.
SQL server 2019 RTM has been released for a long time, please uninstall the SQL Server 2019 CTP 2.2 (Community Technology Preview 2.2)( 15.0.1200.24), install SQL server 2019 RTM and apply CU8 for SQL 2019 as others mentioned.
Download SQL server 2019 RTM.
Cumulative Update 8 for SQL Server 2019
You can follow the steps from this document to uninstall SQL 2019 CTP2.2.
Uninstall an Existing Instance of SQL Server (Setup)
If the response is helpful, please click "Accept Answer" and upvote it.
My interpretation is Jamal got the message of my post, but instead following my advice, he applied the "workaround" of downgrading to a version of SSMS that does not use this column. I will have to admit that I shook my head in disbelief when I read this.
I realise that Jamal may be in a hurry to produce something, and therefore decided to defer installing the RTM version of SQL 2019. But I like to point out again: you may not be able to upgrade these databases to SQL 2019 RTM! So you are just digging deeper into the hole.