Create a new RPC service using Laminas API tools > Error creating service (Code: 422): Failed Validation

[ranjith-2517]

Issue Report

Q	A
8.0.16	PHP

Not able to create an RPC service, I'm getting the below error

Error creating service (Code: 422): Failed Validation

REST service is working fine. The problem is only with the RPC service which is I do not understand. Can someone please help me? Thanks in advance. :-)
I have attached the screenshot of composer.json for reference.

[Bro3x]

Same here. Got the following messages at ContentValidationListener.php:267:

'controller_class' => 'The Controller Class must be a valid, fully qualified, PHP class name'
'accept_whitelist' => 'The Accept Whitelist must be an array of valid media type expressions'
'content_type_whitelist' => 'The Content-Type Whitelist must be an array of valid media type expressions'
'http_methods' => 'The HTTP Methods must be an array of valid HTTP method names'

[Bro3x]

See laminas-api-tools/api-tools-admin#81