Komments Plugin (mauricerenck) Uncaught SyntaxError

The CMS Questions
1

Been using this plugin (version 0.10.5) successfully with Kirby 3.5.5 on a single language site.

I’ve upgraded Kirby to version 3.6.1 and the Komments plugin to 1.5.1 and now there is an error every time a comment gets posted. (I changed my site to be multilingual)

XHRPOSThttp://localhost/komments/send
[HTTP/1.1 500 Internal Server Error 224ms]

Uncaught (in promise) SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data

The comment does get submitted and I am able to review it in the dashboard.

But previously, when submitting a comment, there was a message confirming the submission of the comment. This does not appear anymore.
I’ve looked in the komments.js and I think the problem’s origin is in line 78 and following. But I don’t know any further.

Thanks for helping!

2

I’ve found what’s wrong here.
In /komments/utils/receiveKomment.php was an error in line 165.

Wrong:
public function sendReponseToClient(string $headlineTranslationString, string $messageTranslationString, number $httpCode, boolean $shouldReturnJson)

Right:
public function sendReponseToClient(string $headlineTranslationString, string $messageTranslationString, number $httpCode, bool $shouldReturnJson)

It should be “bool” instead of “boolean”.

The element div.form-feedback is now working correctly again and I’m not getting any error messages.