feat(learn): add full stack certificate md and handle errors

Co-authored-by: Mrugesh Mohapatra <1884376+raisedadead@users.noreply.github.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

curriculum/challenges/english/12-certificates/full-stack-certificate/full-stack-certificate.english.md

@@ -0,0 +1,53 @@
+---
+id: 561add10cb82ac38a17213bd
+title: Full Stack Certificate
+challengeType: 7
+isHidden: false
+isPrivate: true
+---
+
+## Description
+<section id='description'>
+
+</section>
+
+## Instructions
+<section id='instructions'>
+
+</section>
+
+## Tests
+<section id='tests'>
+
+```yml
+tests:
+  - id: 561add10cb82ac38a17513bc
+    title: Responsive Web Design Certificate
+  - id: 561abd10cb81ac38a17513bc
+    title: JavaScript Algorithms and Data Structures Certificate
+  - id: 561acd10cb82ac38a17513bc
+    title: Front End Libraries Certificate
+  - id: 5a553ca864b52e1d8bceea14
+    title: Data Visualization Certificate
+  - id: 561add10cb82ac38a17523bc
+    title: API's and Microservices Certificate
+  - id: 561add10cb82ac38a17213bc
+    title: Legacy Information Security and Quality Assurance Certificate
+
+```
+
+</section>
+
+## Challenge Seed
+<section id='challengeSeed'>
+
+</section>
+
+## Solution
+<section id='solution'>
+
+```js
+// solution required
+```
+
+</section>