Runtime error when deleting ResourceComposition when no instances are present

[devdattakulkarni]

Encountered the following error when trying to delete resourcecomposition for which no application instances exist:

kubectl delete resourcecompositions wordpressservice-res-composition --kubeconfig=/home/vagrant/.kubeplus/org-test1/config
Error from server (InternalError): Internal error occurred: failed calling webhook "platform-as-code.crd-binding.v1": failed to call webhook: Post "https://crd-hook-service.default.svc:443/mutate?timeout=30s": EOF

Mutating webhook logs:
kubectl logs kubeplus-deployment-7586f8bbc-vrm82 -c crd-hook

=== User ===
Delete ResourceComposition
Namespace: default
Kind:WordpressService, Group:platformapi.kubeplus, Version:v1alpha1, Plural:wordpressservices
GVR: platformapi.kubeplus/v1alpha1, Resource=wordpressservices
Error:the server could not find the requested resource
...checking at cluster-scopeError:the server could not find the requested resource
2023/12/10 12:57:58 http: panic serving 10.244.0.1:48634: runtime error: invalid memory address or nil pointer dereference
goroutine 369801509 [running]:
net/http.(*conn).serve.func1()
/usr/local/go/src/net/http/server.go:1854 +0xbf
panic({0x1460dc0, 0x21f8e80})
/usr/local/go/src/runtime/panic.go:890 +0x263
main.handleDelete(0xc00056dd70)
/home/vagrant/go/src/github.com/cloud-ark/kubeplus/mutating-webhook/webhook.go:412 +0xda4
main.(*WebhookServer).mutate(0x17ecc20?, 0xc00056dd70, {0xc00052b148, 0x6})
/home/vagrant/go/src/github.com/cloud-ark/kubeplus/mutating-webhook/webhook.go:205 +0x3b4
main.(*WebhookServer).serve(0xc000023ae0?, {0x17fe5f0, 0xc0001322a0}, 0xc0004bb700)
/home/vagrant/go/src/github.com/cloud-ark/kubeplus/mutating-webhook/webhook.go:1686 +0x45d
net/http.HandlerFunc.ServeHTTP(0xc0001322a0?, {0x17fe5f0?, 0xc0001322a0?}, 0x15f8f9f?)
/usr/local/go/src/net/http/server.go:2122 +0x2f
net/http.(*ServeMux).ServeHTTP(0xc000632d8d?, {0x17fe5f0, 0xc0001322a0}, 0xc0004bb700)
/usr/local/go/src/net/http/server.go:2500 +0x149
net/http.serverHandler.ServeHTTP({0x17f2220?}, {0x17fe5f0, 0xc0001322a0}, 0xc0004bb700)
/usr/local/go/src/net/http/server.go:2936 +0x316
net/http.(*conn).serve(0xc000423200, {0x17fed28, 0xc0003673b0})
/usr/local/go/src/net/http/server.go:1995 +0x612
created by net/http.(*Server).Serve
/usr/local/go/src/net/http/server.go:3089 +0x5ed