Python connect to mysql-gnucash doesn't work anymore with Rev 19209

[Christoph Holtermann]

 Hello !

My python script ceased to run with a recent version
of gnucash (19209). It worked with 18542.

session=Session("mysql://localhost:gnucash:USER:PASSWORD")

now i get :

GnuCashBackendException: call to begin resulted in the following errors, (11,)

Can anyone help ? Did the syntax of the URI change ? I think i got it from
gnucashs window. Now there it is mysql://christoph@localhost/gnucash.
Using that in the Sessioncall doesn's help either.

best regards,

C. Holtermann