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Gap error in complex fenestration

Can someone please help a newbie with an error message when simulating a complex fenestration system with a gas fill? Not sure about what info that needs to be provided to help. Below is the error message. The BSDF info was generated by WINDOW7 and exported as a BSDF.IDF. The gap data from the BSDF is also below.

Error:

Program Version,EnergyPlus, Version 9.2.0-921312fa1d, YMD=2020.04.13 18:03, * Severe * <root>[WindowMaterial:GasMixture][Gap_107_W_0_0127][gas_1_type] - "Air - EN673" - Failed to match against any enum values. * Severe * <root>[WindowMaterial:GasMixture][Gap_107_W_0_0127][gas_2_type] - "Argon - EN673" - Failed to match against any enum values. * Fatal * Errors occurred on processing input file. Preceding condition(s) cause termination. ...Summary of Errors that led to program termination: ..... Reference severe error count=2 ..... Last severe error=<root>[WindowMaterial:GasMixture][Gap_107_W_0_0127][gas_2_type] - "Argon - EN673" - Failed to match against any enum values. *** 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; 2 Severe Errors; Elapsed Time=00hr 00min 1.03sec

Gap layer in BSDF:

!---------------------------------------------------------------------- ! Window Gap Layers !----------------------------------------------------------------------

WindowMaterial:Gap, Gap_107_Glz_610_Layer_1, !- gap name: Air (10) / Argon (90) Mix - EN673 0.0127, !- thickness Gap_107_W_0_0127, !- Gas (or Gas Mixture) name 101325.0000; !- pressure

WindowMaterial:Gap, Gap_1_Glz_610_Layer_2, !- gap name: Air 0.0381, !- thickness Gap_1_W_0_0381, !- Gas (or Gas Mixture) name 101325.0000; !- pressure