Bug quand je veux repondre a mon sujet (1942-shooter)

j ai un bug quand je veux repondre a mon sujet :

l'option part dans le console chrome. mais derriere j ai une erreur js 

1. Request URL:
   https://gamebuino.com/community/topic/1942-shooter

2. Request Method:
   OPTIONS

3. Status Code:
   200 OK

4. Remote Address:
   52.51.150.243:443

5. Referrer Policy:
   no-referrer-when-downgrade

Uncaught TypeError: Cannot read property 'replace' of undefined
    at markdown (1942-shooter?page=5:963)
    at HTMLTextAreaElement.<anonymous> (1942-shooter?page=5:988)
    at HTMLTextAreaElement.dispatch (jquery-3.3.1.min.js:2)
    at HTMLTextAreaElement.y.handle (jquery-3.3.1.min.js:2)
    at Object.trigger (jquery-3.3.1.min.js:2)
    at w.fn.init.triggerHandler (jquery-3.3.1.min.js:2)
    at Object.v [as trigger] (froala_editor.min.js:7)
    at d (save.min.js:7)
    at save.min.js:7