I’m currently making a login page for a service and after sending a fetch request to the server to check the username and password, once the reponse on the client side arrives there is that warning in the console:

I’m pretty sure that this warning comes from the psono extension, because when disabling all extensions or using a different browser it does not show this warning and it always is logged in the console when the notification bar of the extension that asks if the password should be saved is shown.

Furthermore there is this request under the network tab that has failed, I’m not really sure how it relates to this, but maybe someone here can get some information from it:

Generally I’m not that knowledgeable in security measures for nodejs applications, so any further tipps and recommendation are welcome.