add additional assert

src/problems/basic_problems.jl

@@ -434,6 +434,7 @@ struct DataIntegralProblem{Y, X, D, K} <: AbstractIntegralProblem{false}
     @add_kwonly function DataIntegralProblem(y::AbstractArray, x::AbstractVector;
         dim = 1,
         kwargs...)
+        @assert dim <= ndims(y) "The integration dimension `dim` is larger than the number of dimensions of the integrand `y`"
         @assert length(x)==size(y, dim) "The integrand `y` must have the same length as the sampling points `x` along the integrated dimension."
         @assert axes(x, 1)==axes(y, dim) "The integrand `y` must obey the same indexing as the sampling points `x` along the integrated dimension."
         new{typeof(y), typeof(x), Val{dim}, typeof(kwargs)}(y, x, Val(dim), kwargs)