Not totally sure what you mean here. Are you saying you're not able to save items to the Zotero app?

[JavaScript Error: "HTTP request to http://127.0.0.1:23119/connector/saveItems has timed out after 15000ms"]

This suggests the Zotero Connector isn't able to connect to the Zotero app, possibly because of security software on your computer. See https://www.zotero.org/support/kb/connector_zotero_unavailable