You can try to systematically debug this issue by following some of the below approaches that may help you in narrowing down on the root cause and also resolve the issue:
1. First check for any left hidden references of the interface library in the model components such as blocks, ports and unlink them if found. For an efficient approach, you can also leverage the which function in MATLAB to locate the file and its path. Please refer to the below documentation to know more about the which function:
2. You can also verify the dependencies on the library that contained the interface to check if any references are still present. You can also use the "Dependency Analyzer" released in MATLAB R2023a to visualise any remnant dependencies. Please refer to the below documentation to know more about the "Dependency Analyzer":
3. Lastly, you can restart MATLAB to clear the cached information or temporary data that can cause issues. The rehash function can also be used as an alternate to refresh the files and paths. Please refer to the below documentation to know more about the rehash function:
Hope it helps!
