When I run vterm from ssh tramp, from "/" directory work fine but from $HOME not working

[witnessJo]

When I run vterm from "/" directory work fine on Tramp SSH

But I run vterm from elsewhere not from root directory

minibuffer just showing the message "Tramp: Opening connection vterm for cnc-adc using ssh...done"
But not showing vterm buffer of default-directory $HOME

Can I know why? I can't find any debug log from emacs about vterm states

[witnessJo]

I found the solution by myself. sorry

my previous vterm-tramp-shells configuration is below

(add-to-list 'vterm-tramp-shells '("ssh" "bin/bash")

but I changed the configuration to

(add-to-list 'vterm-tramp-shells '("ssh" "/bin/bash")

it's work fine

but could I know the method to see debug logs of vterm from emacs?