Large SVN repo and malform XML error

[LmG7119]

Hi I have a large repo with multiple SSIS projects and DBs solution in SSDT with the following structure.

Root--- Branches
               -- Prod
               -- Test
               -- UAT
     -- trunk

I can run conversion successfully with --nobranches --notags but I get an malform XML at line 312 or something if I try to run it all.

Is there a way to overcome that error?

Can I run trunk only and than run/add branches on second round?

Thanks