Hi,
Check if there is mwlibmwsimulink_builtinimpl.dll in the directory shown in the error message.
Then, check if there is file "msvcr120.dll" in the directory "...\MATLAB\R2019a\bin\win64\".
If either file is missing, please reach Tech Support for the file in the same MATLAB version.
If you already have these two files, try re-installing.
Hope this helps!