[Bug 53121] The Page Info Extension crashes Epiphany

[DarrenAdams]

Public bug reported:

Steps to reproduce

* Activate the Page Info extension
* Go to View > Page Information
* Epiphany crashes without warning

When I run Epiphany from a terminal, I see the following text after
Epiphany crashes

epiphany: symbol lookup error:
/usr/lib/epiphany/2.15/extensions/libpageinfoextension.so: undefined
symbol: _ZN9EphyUtils6NewURIEPP6nsIURIRK18nsAString_internalPKcS1_

There are no other warnings, and this occurs no matter what page I visit
and it does not matter how I start Epiphany (e.g. launching th app from
a menu, clicking an URL from another app)

** Affects: epiphany-extensions (Ubuntu)
     Importance: Untriaged
         Status: Unconfirmed

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The Page Info Extension crashes Epiphany
https://launchpad.net/bugs/53121