Examples don't work without having ImageView loaded

[OvidiusCicero]

https://juliaimages.org/stable/pkgs/segmentation/#Unseeded-Region-Growing and https://juliaimages.org/stable/democards/examples/contours/sujoy_edge_demo/#Edge-detection-using-Sujoy-Filter fail with iterate not found as well as abs2 not found; I guess a more basic package is loaded by ImageView but I cannot find out which one

for example, error message:

MethodError: no method matching iterate(::ColorTypes.RGB{Float64})

Closest candidates are:

iterate(!Matched::Union{LinRange, StepRangeLen}) at range.jl:664

iterate(!Matched::Union{LinRange, StepRangeLen}, !Matched::Int64) at range.jl:664

iterate(!Matched::T) where T<:Union{Base.KeySet{var"#s79", var"#s78"} where {var"#s79", var"#s78"<:Dict}, Base.ValueIterator{var"#s77"} where var"#s77"<:Dict} at dict.jl:693

...