Creating a new SVN/GIT instance using the web manager doesn’t work ( CLI worked)

• Error
• Consistency

I create an 2 new instances (one using SVN one using GIT) using the CLI interface and it worked:

[root@server app]# php tiki-manager instance:create

Create a new instance
=====================
.../...
[OK] Please test your site at https://xxxx.xxxx.com

Doing the same (installing 20.x) using the web manager interface I got an error:

Database information question ?

I don’t usually use root for the database but I tried to check if there was a permission issues.
I filled information based on : https://doc.tiki.org/Manager#instance:create

The database part need little documentation or tips.
It differs from the way we use the Tiki-install.

What is expected ?
Does Tiki Manager create the db, does it expect the db to be created prior the instance creation ?
I usually create my db for each Tiki with specific USER/DB/PASSWORD directly.

The field "Database Prefix" is adding to the confusion. Why a prefix ?
Can’t I directly give my database name ?

Import an existing Tiki throw me the same error:

SQLSTATE[HY000]: General error: 8 attempt to write a readonly database INSERT OR REPLACE INTO instance (instance_id, name, contact, webroot, weburl, tempdir, phpexec, app) VALUES (NULL, 'gallery.xxxxx.com', 'me@xxxxx.com', '/var/www/virtual/gallery.xxxxx.com/html', 'https://gallery.xxxxx.com', '/tmp/trim_temp', NULL, NULL) ; 

Is there a CLI command to import an existing Tiki ?

This bug has been demonstrated on show2.tiki.org

Please demonstrate your bug on show2.tiki.org