Need help in Knative

[Sai Ranjith vankayalapati]

task : deployed mnist model with .mar file is in kserve with normal namespace i got the prediction
task2.: when i deployed in the istio injected namespace of same mnist file with .mar is having issue and getting 504 gateway error
task3: converted the  mnist into the docker image and deployed to the normal namespace getting error while predicting 404
task4: when i deployed in the istio-sidecar injected namespace getting 504 gateway error

I found that Knative activator getting error
{"severity":"WARNING",
"timestamp":"2023-03-30T14:01:52.502085Z",
"logger":"activator","caller":"net/revision_backends.go:342",
"message":"Failed probing pods",
            "commit":"129931f",
            "knative.dev/controller":"activator",
            "knative.dev/pod":"activator-68c4b6f4dc-q4xkd",
            "knative.dev/key":"user1/minist-predictor-default-00001",
            "curDests":{"ready":"10.244.7.69:8012","notReady":""},
            "error":"unexpected status code: want [200], got 403"}