Warning due to obtaining out of range temperature

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In my simulation to a GSHP with vertical GHE using Energyplus software, I am getting the following warnings:

GetSpecificHeatGlycol: Temperature is out of range (too low) for fluid [WATER-GLYCOL MIX] specific heat supplied values **
**   ~~~   ** ..Called From:PlantLoopSolver::UpdateAnyLoopDemandAlterations,Temperature=[-5.13E-002], supplied data range=[0.00,125.00]
**   ~~~   **  Environment=DESIGN DAY, at Simulation time=01/01 18:20 - 18:30
** Warning ** GetDensityGlycol: Temperature is out of range (too low) for fluid [WATER-GLYCOL MIX] density **
**   ~~~   ** ..Called From:NodeReportingCalc:NODE 33,Temperature=[-0.18], supplied data range=[0.00,100.00]
**   ~~~   **  Environment=DESIGN DAY, at Simulation time=01/01 18:20 - 18:30
** Warning ** GetConductivityGlycol: Temperature is out of range (too low) for fluid [WATER-GLYCOL MIX] conductivity **
**   ~~~   ** ..Called From:calcPipeConvectionResistance,Temperature=[-0.39], supplied data range=[0.00,100.00]
**   ~~~   **  Environment=DESIGN DAY, at Simulation time=01/01 18:30 - 18:40
** Warning ** GetViscosityGlycol: Temperature is out of range (too low) for fluid [WATER-GLYCOL MIX] viscosity **
**   ~~~   ** ..Called From:calcPipeConvectionResistance,Temperature=[-0.39], supplied data range=[0.00,100.00]
**   ~~~   **  Environment=DESIGN DAY, at Simulation time=01/01 18:30 - 18:40

I would be greatly thankful to any help or idea on how to solve this warning. Many thanks,