kms-vault-operator throwing error after upgrade to k8s 1.25

[ryadav-asapp]

After upgrading to k8s 1.25. Kms-vault-operator is throwing error can you help me understand this error from pods.

I0526 11:59:10.810973 1 request.go:665] Waited for 1.046650228s due to client-side throttling, not priority and fairness, request: GET:https://172.20.0.1:443/apis/authentication.k8s.io/v1?timeout=32s
2023-05-26T11:59:15.460Z INFO controller-runtime.metrics metrics server is starting to listen {"addr": ":8080"}
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x50 pc=0x16ef1a4]

goroutine 1 [running]:
github.com/patoarvizu/kms-vault-operator/controllers.VaultK8sAuth.login(0xc000454c90, 0x1d42168)
/workspace/controllers/kmsvaultsecret_k8sauth.go:33 +0x304
github.com/patoarvizu/kms-vault-operator/controllers.(*KMSVaultSecretReconciler).SetupWithManager(0xc0007eee40, 0x1d52888, 0xc00000a1e0, 0x1d42168, 0xc000454a90)
/workspace/controllers/kmsvaultsecret_controller.go:204 +0x105
main.main()
/workspace/main.go:76 +0x529