Downsampling Task fail with error (unsupported input type for mean aggregate)

InfluxDB 2 Tasks
,
3 
data = from(bucket: "Jetson")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["_measurement"] == "exec_jetson_stats")

int_data = data
  |> filter(fn: (r) => types.isType(v: r._value, type: "int"))
  |> aggregateWindow(every: v.windowPeriod, fn: mean, createEmpty: false)

float_data = data
  |> filter(fn: (r) => types.isType(v: r._value, type: "float"))
  |> aggregateWindow(every: v.windowPeriod, fn: mean, createEmpty: false)

string_data = data
  |> filter(fn: (r) => types.isType(v: r._value, type: "string"))
  |> aggregateWindow(every: v.windowPeriod, fn: last, createEmpty: false)
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