A problem with JuMP Tutorial-linear problem-cannery problem

Specific Domains Optimization (Mathematical)
8

my JuMP is v0.21.10

Yes, please update your packages. (JuMP is now 1.0! JuMP 1.0.0 is released | JuMP If you update, you won’t have problems like this breakage in future.)

Here’s the tutorial from JuMP v0.21:
https://jump.dev/JuMP.jl/v0.21/tutorials/Mixed-integer%20linear%20programs/cannery/

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