How to stop a long-running optimization process in JuMP?

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The jupyter printing issue is discussed in

Gurobi does not display log

I am using Convex.jl in conjuction with Gurobi in a Jupyter notebook to solve a convex programming problem. Everything works but Gurobi is not displaying its log to the console in “realtime”, but it displays everything at once only at the end of the optimization. I tried to “force” the logging (even though it should be enabled by the default options), inizializing the optimizer with opt = MOI.OptimizerWithAttributes(() -> Gurobi.Optimizer(GUROBI_ENV), "DisplayInterval" => 1, "OutputFlag" => 1, …