Magit git commit isn't working on spacemacs

Question

After installing Magit in spacemacs. I used Helm to create a git repository. I added some files to stage then tried to commit. Let me know if I'm doing something wrong or it's just an issue.

I get:

transient--emergency-exit: Wrong type argument: transient-suffix, [eieio-class-tag--transient-switch 1 nil nil nil nil nil nil nil nil ...]

I've also put this question:

github gitter reddit

Ubuntu 18.04.3 LTS The rest was:

• Emacs: 25.2.2
• Spacemacs: 0.300.0
• Spacemacs branch: develop (rev. 76ce0ac)

Reinstalled Emacs same version and spacemacs stable Spacemacs v.0.200.13 and I have the same issue.

Full trace:

    Debugger entered--Lisp error: (wrong-type-argument transient-suffix [eieio-class-tag--transient-switch 1 nil nil nil nil nil nil nil nil "-a" transient:magit-commit:--all t " %k %d (%v)" "Stage all modified and deleted files" nil nil nil nil nil nil nil nil nil "--all" "-a" nil unbound nil nil nil nil nil nil nil nil] object)

signal(wrong-type-argument (transient-suffix [eieio-class-tag--transient-switch 1 nil nil nil nil nil nil nil nil "-a" transient:magit-commit:--all t " %k %d (%v)" "Stage all modified and deleted files" nil nil nil nil nil nil nil nil nil "--all" "-a" nil unbound nil nil nil nil nil nil nil nil] object))

transient--emergency-exit((wrong-type-argument transient-suffix [eieio-class-tag--transient-switch 1 nil nil nil nil nil nil nil nil "-a" transient:magit-commit:--all t " %k %d (%v)" "Stage all modified and deleted files" nil nil nil nil nil nil nil nil nil "--all" "-a" nil unbound nil nil nil nil nil nil nil nil] object))

transient-setup(magit-commit)

magit-commit()

funcall-interactively(magit-commit)

call-interactively(magit-commit nil nil)

command-execute(magit-commit)