None of the vault samples for “Integration with DHTMLX components” is working - only for your info 
Nice catch 
Thanks, will be fixed soon
Almost a year has passed and they still don’t work.
Is it just the examples or the Vault?
It could be the server-side php code problem.
Pls. refer to the link below https://forum.dhtmlx.com/viewtopic.php?f=18&t=55249