fix length check

Author: lkdvos

src/tensors/tensor.jl

@@ -139,8 +139,7 @@ TensorMap{T}(data::DenseVector{T}, codomain::TensorSpace, domain::TensorSpace) w
 Constrct a `TensorMap` from the given raw data.
 """
 function _TensorMap{T, A}(data::DenseVector{T}, V::TensorMapSpace) where {T, A}
-    length(data) == fusionblockstructure(space).totaldim ||
-        throw(DimensionMismatch("invalid length of data"))
+    length(data) == dim(V) || throw(DimensionMismatch("invalid length of data"))
     return TensorMap{T, spacetype(V), numout(V), numin(V), A}(data, V)
 end
 _TensorMap{T, A}(data::DenseVector{T}, codomain::TensorSpace, domain::TensorSpace) where {T, A} =