I’m havinng trouble using Alpine.jl. I know that it’s compatible with MOI now, and the new version was presented at INFORMS this year. Yet, when I try using it, I get the following error:

```
MethodError: no method matching initialize(::Nothing, ::Array{Symbol,1})
Closest candidates are:
initialize(!Matched::JuMP.NLPEvaluator, ::Array{Symbol,1}) at /Users/Hassan/.julia/packages/JuMP/qhoVb/src/nlp.jl:309
initialize(!Matched::MathOptInterface.Test.FeasibilitySenseEvaluator, ::Array{Symbol,1}) at /Users/Hassan/.julia/packages/MathOptInterface/VjkSQ/src/Test/nlp.jl:184
initialize(!Matched::MathOptInterface.Test.HS071, ::Array{Symbol,1}) at /Users/Hassan/.julia/packages/MathOptInterface/VjkSQ/src/Test/nlp.jl:16
...
load!(::Alpine.Optimizer) at solver.jl:484
optimize!(::Alpine.Optimizer) at algorithm.jl:17
optimize!(::MathOptInterface.Bridges.LazyBridgeOptimizer{Alpine.Optimizer}) at bridge_optimizer.jl:264
optimize!(::MathOptInterface.Utilities.CachingOptimizer{MathOptInterface.AbstractOptimizer,MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}}) at cachingoptimizer.jl:215
optimize!(::JuMP.Model, ::Nothing; bridge_constraints::Bool, ignore_optimize_hook::Bool, kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at optimizer_interface.jl:130
optimize! at optimizer_interface.jl:106 [inlined]
optimize! at optimizer_interface.jl:106 [inlined]
```

It seems that it cannot launch any solvers. My code for running Alpine is

```
nl_solver = optimizer_with_attributes(Ipopt.Optimizer, "print_level"=>0, "tol"=>1e-12);
mip_solver = optimizer_with_attributes(Gurobi.Optimizer, "OutputFlag"=>0, "FeasibilityTol"=>1e-6, "OptimalityTol"=>1e-8);
m = Model(optimizer_with_attributes(Alpine.Optimizer, "nlp_solver"=>nl_solver, "mip_solver"=>mip_solver, "time_limit"=>tlim, "relgap"=>gap,"loglevel" => 100));
```

Any help would be appreciated. Thank you.