Hi @iqworks Information Quality Works
First of all I think you can delete this reference and add it again, since you are a copied project, you can't rule out the problem that the file reference is corrupted or the location is different.
Secondly, it is important that your original project is in the same version as your current project.
Finally, you can try to add this reference to the web.config file, but usually this is a problem to resolve multiple version conflicts.
Best regards,
Qi You
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