'Error using mex' on macOS Catalina, MATLAB R2020a

Hello D2D-team,
I'm getting the following error when trying to run the Beckmann model (from example folder Bachmann_MSB2011) on macOS Catalina (Version 10.15.5) using MATLAB R2020a Update 2 (Version 9.8.0.1380330):
Data 2 Dynamics Software

(arFramework3, def-version 3, c-version code_190517c)
Website & bug report: http://www.data2dynamics.org
Copyright 2016 D2D Development Team. All rights reserved.

Clearing old D2D mex files from memory  [OK]
.
.
.
Building with 'Xcode with Clang'.

Error using mex
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:43:3:
error: use of undeclared identifier 't1'
  t1 = (p[10]*x_tmp[1]*x_tmp[7])/p[24];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:44:3:
error: use of undeclared identifier 't2'
  t2 = (p[6]*x_tmp[1])/((p[14]*x_tmp[24])/p[13]+1.0);
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:45:3:
error: use of undeclared identifier 't3'
  t3 = (p[6]*x_tmp[1]*3.0)/((p[7]*x_tmp[5]+1.0)*((p[14]*x_tmp[24])/p[13]+1.0));
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:46:3:
error: use of undeclared identifier 't4'
  t4 = (p[6]*x_tmp[2]*3.0)/((p[7]*x_tmp[5]+1.0)*((p[14]*x_tmp[24])/p[13]+1.0));
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:47:3:
error: use of undeclared identifier 't5'
  t5 = (p[6]*x_tmp[3])/((p[14]*x_tmp[24])/p[13]+1.0);
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:48:3:
error: use of undeclared identifier 't6'
  t6 = (p[10]*x_tmp[2]*x_tmp[7])/p[24];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:49:3:
error: use of undeclared identifier 't7'
  t7 = (p[10]*x_tmp[3]*x_tmp[7])/p[24];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:50:3:
error: use of undeclared identifier 't8'
  t8 = (p[10]*x_tmp[4]*x_tmp[7])/p[24];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:51:3:
error: use of undeclared identifier 't9'
  t9 = ((x_tmp[2]+x_tmp[4])*p[8]*x_tmp[5])/p[23];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:52:3:
error: use of undeclared identifier 't10'
  t10 = (p[11]*x_tmp[6]*(x_tmp[1]+x_tmp[2]+x_tmp[3]+x_tmp[4]))/p[23];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:53:3:
error: use of undeclared identifier 't11'
  t11 = p[12]*x_tmp[7];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:54:3:
error: use of undeclared identifier 't12'
  t12 = (p[20]*x_tmp[8]*(x_tmp[1]+x_tmp[2]+x_tmp[3]+x_tmp[4]))/(((p[14]*x_tmp[24])/p[13]+1.0)*p[23]);
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:55:3:
error: use of undeclared identifier 't13'
  t13 = (pow(x_tmp[2]+x_tmp[4],2.0)*p[19]*1.0/(p[23]*p[23])*x_tmp[8])/(((p[1]*x_tmp[17])/p[0]+1.0)*((p[14]*x_tmp[24])/p[13]+1.0));
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:56:3:
error: use of undeclared identifier 't14'
  t14 = p[22]*x_tmp[9];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:57:3:
error: use of undeclared identifier 't15'
  t15 = p[21]*x_tmp[10];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:58:3:
error: use of undeclared identifier 't16'
  t16 = (p[3]*p[4]*x_tmp[10])/p[25];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:59:3:
error: use of undeclared identifier 't17'
  t17 = p[2]*x_tmp[11];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:60:3:
error: use of undeclared identifier 't18'
  t18 = p[2]*x_tmp[12];
  ^
/Users/heng/Documents/MATLAB/Function/d2d-master/arFramework3/Examples/Bachmann_MSB2011/Compiled/code_190517c/jak2_stat5_feedbacks_C2FDCA99A5CD7B922B6E986EFF13F3C4.c:61:3:
error: use of undeclared identifier 't19'
  t19 = p[2]*x_tmp[13];
  ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.

Error in arCompile (line 468)
                mex('-c',verbose{:},mexopt{:},'-outdir',['./Compiled/' c_version_code '/' mexext '/'], ...

Error in arCompileAll (line 586)
    arCompile(forcedCompile, false, false, source_dir);

Error in Setup (line 21)
arCompileAll;
Could you please help to suggest how to fix this problem?
Best regards, Heng
Data2Dynamics / d2d

'Error using mex' on macOS Catalina, MATLAB R2020a #154
