EnergyPlus FMU SQlite Error

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Hi guys,

I am facing this problem (the outcome of the .err file)

Program Version,EnergyPlus, Version 9.3.0-baff08990c, YMD=2021.06.16 13:34,

* Fatal * The SQLite database failed to open.

...Summary of Errors that led to program termination:

..... Reference severe error count=0

..... Last severe error=

*** Warning: Node connection errors not checked - most system input has not been read (see previous warning).

*** Fatal error -- final processing. Program exited before simulations began. See previous error messages.

*** EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.

*** EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.

*** EnergyPlus Terminated--Fatal Error Detected. 0 Warning; 0 Severe Errors; Elapsed Time=00hr 00min 0.30sec

The code works with the .idf example files in EnergyPlustoFMU. However, when I use an .IDF generated by my self, It does not work and this error arise. The FMU is correctly initialized, but can not simulate

lab = load_fmu("312v3.fmu",log_level=4)

days=2

final_time = days2460*60

start_time = 0.

idfstep=6

lab.initialize(start_time, final_time, True)

lab.set('Q',1000)

opts=lab.simulate_options()

ncp=int(final_time/(3600./idfstep))

opts["ncp"] = ncp

res=lab.simulate(start_time=start_time,final_time=final_time, options=opts)

The FMU have one input (Q) and one output (TRooMea). Does anyone know how to solve this issue?