Bugzilla

**Description**
The address wasn´t understood error when opening DDG addon


**Environments**
Windows 10

**Tested with**
Firefox 78.0b5 ,  (reproducible)
Firefox nightly 79.0a1 (june11) ,  (reproducible)
Firefox 77.0.1  (not reproducible)


**STEPS**
  
- Download latest  Beta firefox build, (in my case im using Romanian but happens on any)
- Launch firefox
- Install addon https://addons.mozilla.org/en-US/firefox/addon/duckduckgo-for-firefox
- go to about:addons
- Click extensions on the left hand side
- click inside the duckduckgo addon


Actual Results
Error page:

The address wasn´t understood 

Firefox doesnt know how to open this address,because of the following
protocols (addons) isn´t associated to any program.

Expected Result
addon settings should open.


Notes:  
I am getting this randomly, sometimes i enter about:Addons and i click on the addon and it gives the error, sometimes it does not five any error and i see the addon settings.

**Description**
The address wasn´t understood error when opening DDG addon


**Environments**
Windows 10

**Tested with**
Firefox 78.0b5 ,  (reproducible)
Firefox nightly 79.0a1 (june11) ,  (reproducible)
Firefox 77.0.1  (not reproducible)


**STEPS**
  
- Download latest  Beta firefox build, (in my case im using Romanian but happens on any)
- Launch firefox
- Install addon https://addons.mozilla.org/en-US/firefox/addon/duckduckgo-for-firefox
- go to about:addons
- Click extensions on the left hand side
- click inside the duckduckgo addon


**Actual Results**
Error page:

The address wasn´t understood 

Firefox doesnt know how to open this address,because of the following
protocols (addons) isn´t associated to any program.

**Expected Result**
addon settings should open.


**Notes  **
I am getting this randomly, sometimes i enter about:Addons and i click on the addon and it gives the error, sometimes it does not five any error and i see the addon settings.