If you get the above error then, 3rd party cookies need to be enabled in your browser settings or you need to add app.publer.io in the list of sites that can always use cookies.

To do that on:

Chrome:

Go to Settings → Privacy and Security → Cookies and other site data, or simply enter chrome://settings/cookies in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.



Close & reopen the extension


Safari:

Go to Safari → Preferences → Privacy.
Uncheck "Prevent cross-site tracking".
Uncheck "Block all cookies".



Close & reopen the extension.


Firefox:

Go to Preferences → Privacy & Security, or simply enter about:preferences#privacy in the browser URL.
Either don't block third-party cookies.



Or whitelist app.publer.io as shown below.





Close & reopen the extension.


Edge:

Go to Settings → Site Permissions → Cookies and site data, or simply enter edge://settings/content/cookies? in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.



Close & reopen the extension.


Opera:

Go to Preferences → Cookies and other site data under Privacy and Security, or simply enter opera://settings/cookies in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.



Close & reopen the extension.


Brave:

Go to Settings → Additional settings → Privacy and Security → Cookies and other site data, or simply enter brave://settings/cookies in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.



Close & reopen the extension.


The above steps should work for all the other browsers that are not covered in this article.

Updated on: 03 / 04 / 2022