How to fix "failed assertion in B:\matlab\​toolbox\st​ateflow\sf​_xform\ins​trument\Da​taRange.cp​p at line 187"?

When I compile a model with MATLAB 2020b, everything is fine.

When I compile the same with MATLAB 2021b, I get the error

failed assertion in B:\matlab\toolbox\stateflow\sf_xform\instrument\DataRange.cpp at line 187:

In checkValueInTypeDomain: Assertion failed: val != nullptr

How can I fix the issue?

I already tried cleaning the work folder, same issue.

I placed a breakpoint at the construct_module (line 104) (see Stack trace below), it fails at the first call.

Btw: Why is the string B:\matlab\toolbox.... hard coded?

Many thanks for your support!

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Diagnostic Viewer:

...

failed assertion in B:\matlab\toolbox\stateflow\sf_xform\instrument\DataRange.cpp at line 187: In checkValueInTypeDomain: Assertion failed: val != nullptr

[ 0] 0x00007ff92b449095 C:\Program Files\MATLAB\R2021b\bin\win64\sf_xform.dll+00626837 SF::xform::DataRange::insertDataRangeCheckFollowingEdge+00000325

[ 1] 0x00007ff92b449490 C:\Program Files\MATLAB\R2021b\bin\win64\sf_xform.dll+00627856 SF::xform::DataRange::insertDataRangeCheckForInitFcnCFG+00000624

[ 2] 0x00007ff92b44b2f4 C:\Program Files\MATLAB\R2021b\bin\win64\sf_xform.dll+00635636 SF::xform::DataRange::processFcn+00000164

...

[126] 0x00007ff9dfa81ec5 bin\win64\pgo\m_dispatcher.dll+00073413 AutoPushingExecutionFrame::~AutoPushingExecutionFrame+00001205

[127] 0x00007ff9dfa823e0 bin\win64\pgo\m_dispatcher.dll+00074720 Mfh_MATLAB_fn_impl::ensure_loading_of_load_module+00000672

MATLAB stack trace:

> In construct_module (line 104)

In generate_code_for_charts_and_machine (line 137)

In sfc (line 166)

In targetman>code_method (line 319)

In targetman>method_nag_wrapper (line 132)

In targetman (line 75)

In autobuild_kernel>autobuild_local (line 177)

In autobuild_kernel (line 53)

In autobuild_driver (line 118)

In slsf (line 132)

In SLStudio.StartPauseContinue

In SLStudio.ToolBars

...