Can you let us know which error message you received? As this context will help us assist you further in this matter. I would suggest attempting toclear the cacheon your browser and try to addOrder Printerto your store once again. If the error persists, you can try this action on another browser, as for example - if you are usingSafaritry to add the application onGoogle Chrome.
Let me know if that does the trick, happy to help out.
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