panic while refreshing a scaler cache

[vflaux]

Report

Encountered one panic:

panic: runtime error: index out of range [1] with length 0

goroutine 1738630 [running]:
github.com/kedacore/keda/v2/pkg/scaling/cache.(*ScalersCache).refreshScaler(0xc07feb2fc0, {0x49cf798?, 0xc0431fa930?}, 0x1)
    /workspace/pkg/scaling/cache/scalers_cache.go:159 +0x44b
github.com/kedacore/keda/v2/pkg/scaling/cache.(*ScalersCache).GetMetricsAndActivityForScaler(0xc07feb2fc0, {0x49cf798, 0xc0431fa930}, 0x1, {0xc003ac5fb0, 0x2d})
    /workspace/pkg/scaling/cache/scalers_cache.go:135 +0x1b2
github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).GetScaledObjectMetrics.func1(_, _, {_, _}, _, {{0xc03c2f6720, 0x27}, {0xc03c936340, 0x4}, {0x3648ab8, ...}, ...}, ...)
    /workspace/pkg/scaling/scale_handler.go:527 +0x4f4
created by github.com/kedacore/keda/v2/pkg/scaling.(*scaleHandler).GetScaledObjectMetrics in goroutine 1738628
    /workspace/pkg/scaling/scale_handler.go:503 +0x1d6d

Expected Behavior

No panic

Actual Behavior

Random panic

Steps to Reproduce the Problem

I can't figure out how to reproduce the panic.

Logs from KEDA operator

No response

KEDA Version

2.14.0

Kubernetes Version

1.28

Platform

Amazon Web Services

Scaler Details

No response

Anything else?

[SpiritZhou]

What scaler are you using? Could you provide more detail info such as the scaleobject yaml?