No, I mean that that's not a version of Zotero you ever should have installed if you're not a plugin developer. Presumably you got that from the "Zotero 7 for Developers" wiki page?
Remove that and install Zotero from the download page (for Zotero 6) or beta download page (for the Zotero 7 beta). If you're unsure about any of this, I would strongly recommend staying on Zotero 6 for now.
Remove that and install Zotero from the download page (for Zotero 6) or beta download page (for the Zotero 7 beta). If you're unsure about any of this, I would strongly recommend staying on Zotero 6 for now.