Issue 1:
Hi,

Hope everyone is ok

Describe the bug

In Chrome V68, everything is ok but the problem is with the Chrome used by Google Bot.

In fact, in my home page, after building the home page, the title is automatically replaced by ": An unexpected error has occured".

You definetely need to go over "to reproduce and dem section"

To Reproduce & Dem

You need to go to https://www.browserling.com/browse/win/7/chrome/41/https://en.vetolib.vet and observe the title.

The other page are totally OK.

System information

NextJs 6.1.1

Node.JS 8.11.1

Nginx AWS Server

My Code

document.js :

`<html lang={process.env.LANGUAGECODE}>
<Head>
{/*Meta tag for every page*/}
{/* <meta charSet="utf-8" /> */}

{/* Use minimum-scale=1 to enable GPU rasterization */}
<meta name="viewport" content={'user-scalable=0, initial-scale=1, ' + 'minimum-scale=1, width=device-width, height=device-height'}/>

{/* PWA primary color */}
<meta name="theme-color" content={pageContext.theme.palette.primary.main} />

{/* Links*/}
<link rel="stylesheet" href="/_next/static/style.css" />
<link rel="shortcut icon" href="/static/favicon.ico" />
<link rel="stylesheet" href="https://cdn.rawgit.com/h-ibaldo/Raleway_Fixed_Numerals/master/css/rawline.css" />
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons" />
{/* Comfortaa Logo Font */}
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Comfortaa" />
{/* GOOGLE SEARCH CONSOLE */}
<meta name="google-site-verification" content={process.env.GOOGLESEARCHCONSOLE} />

</Head>
<body>
<Main />
<NextScript />
</body>
</html>`

landing.js (actually it's the home page)

import LandingMeta from 'landing/landingMeta';
return (
<I18nextProvider i18n={Local(props.translations,props.language)}>
<div>
<LandingMeta/>
<CookiesStateConnector/>
<GlobalSnackbar/>
<NavBar fixed/>
<Opener/>
<HowTo />
<Footer />
</div>
</I18nextProvider>
);

And the famous LandingMeta.js

return (
<Head>
{/*Meta tag That can change on some pages (use a key to avoid duplication)*/}
<title key="title" >Vetolib : Make An online appointment</title>
{/*A brief description of the page.*/}
<meta key="description" name="description" content={`${t('meta:metaOgTitle')} ${t('meta:metaOgDescription')}`} />
{/*A series of keywords you deem relevant to the page in question.*/}
<meta key="keywords" name="keywords" content={t('meta:metaKeyWords')} />
{/*An indication to search engine crawlers (robots or "bots") as to what they should do with the page.*/}
<meta key="robots" name="robots" content="index,follow" />
</Head>
);

Thank you so much for your help

Issue 2:
Bug report

Describe the bug

I have 3 different websites served by next.js and some random pages are being indexed on google with title as ": An unexpected error has occurred - My website name" but everything looks fine with the title tag when opening page's source

To Reproduce

Have no idea, since the error only appears when indexed by google, but you can see it wrong with these website:

site:brasilmaplestory.com

just google it ^

Expected behavior

No error message at page's title

Screenshots

System information

Version of Next.js: 6.1.1

Additional context

How do I use the title tag:

page.jsx

<PageLayout title={`CashShop | ${websiteName`}>
.... Page content
</PageLayout>

PageLayout.jsx

const PageLayout = ({
title,
...
}) => (
<div>
<Head>
<meta charSet="UTF-8" />
<title>{title}</title>
........
</Head>
</div>
);