Error initializing CLASS-PT for certain values of N_ur

[p-espenshade]

Hello, I am using the Python wrapper for CLASS-PT. I noticed that the following Python script works fine in initializing CLASS-PT:

from classy import Class

CPT = Class()
cosmology = {'h': 0.6736, 
      'n_s': 0.9649, 
      'omega_b': 0.02237, 
      'omega_cdm': 0.12, 
      'tau_reio': 0.0544, 
      'A_s': 2.0989031673191437e-09, 
      'z_pk': 1.5,
      'N_ur': 3.044, 
      'N_ncdm': 0
}
CPT.set(cosmology)
CPT.set({'output':'mPk', 
        'non linear':'PT',
        'IR resummation':'Yes', 
        'Bias tracers':'Yes'
})
CPT.compute()

However, when I change N_ur from 3.044 to 3.046 I get an error:

File "classy.pyx", line 393, in classy.Class.compute
classy.CosmoComputationError: 

Error in Class: spectra_init(L:5901) :error in spectra_pk(pba,ppt,ppm,pnlpt,pnl,psp);
=>spectra_pk(L:8564) :error in spectra_sigma(pba,ppm,psp,8./pba->h,0.,&(psp->sigma8));
=>spectra_sigma(L:9866) :error in spectra_pk_at_k_and_z(pba,ppm,psp,k,z,&pk,pk_ic);
=>spectra_pk_at_k_and_z(L:683) :error in spectra_pk_at_z(pba, psp, logarithmic, z, spectrum_at_z, spectrum_at_z_ic);
=>spectra_pk_at_z(L:408) :error in array_interpolate_spline(psp->ln_tau, psp->ln_tau_size, psp->ln_pk, psp->ddln_pk, psp->ln_k_size, ln_tau, &last_index, output_tot, psp->ln_k_size, psp->error_message);
=>array_interpolate_spline(L:1706) : x=9.559201e+00 > x_max=9.559201e+00

The reason I want to use N_ur = 3.046 is to compare the output with older datasets I have from when N_ur = 3.046 was the default value in CLASS.