tolerance not being inputted [closed]

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I'm trying to test out cosimulation with pyfmi (one energyplus model and another openModelica). I keep getting this error:

xtol=0.000000 is too small, no further improvement in the approximate solution is possible.

I changed the tolerance to be larger via the options, but it doesn't seem to change anything. I think this is due to the fact that pyfmi calls scipy.optimize.root WITHOUT passing in a tolerance? But I feel like the default tolerance shouldn't be lower than 0.000000.

Has anyone encountered this error?

Here is my code:

model1 = load_fmu("path_to_fmu.fmu")
model2 = load_fmu("path_to_fmu.fmu")

models = [model1, model2]
connections = [ set up connections ]
master = Master(models, connections)

seconds_in_hour = 60 * 60
start_time = 0
final_time = 86400 * 7

opts = master.simulate_options()
opts["initialize"] = True
opts["local_rtol"] = 0.9
opts["rtol"] = 0.9
opts["atol"] = 0.09

// not included but step size is correctly calculated for my idf file. the OpenModelica fmu is variable stepsize
// opts["step_size"] = 60

res = master.simulate(start_time=0,
final_time=final_time,
options=opts)