Error: Incorrect number of sealed components

[louisgv]

I'm getting this error suddenly, very weird. This is a 500 so it seems my next API route is broken, but no error/broken build. Next still saying compile successful. I have found that using incognito bypass the problem.

[louisgv]

Seems to stem from iron core itself https://npmdoc.github.io/node-npmdoc-iron/build/apidoc.html

[louisgv]

So I found the cause of the error. Another app apparently created cookie under the same name, so iron could not parse it. Feel free to close!

[vvo]

Indeed this is why nowadays we recommend setting a very specific cookieName and enforcing its usage. When you have two cookies with the exact same name and the url of the website is the same then you can have issues. This happens a lot in development, https://localhost:3000 can be many apps so be sure to use a cookieName that's always different for each app.

[dalalRohit]

In my case, it is not because of clashing cookie names. The error is thrown when it is tampered/altered from DevTools cookie store

#380