Suddenly "No parsable JSON found in this document" but filter preview still working fine

[andreagdipaolo]

I was following marketplace listings with a Json filter on its search results and it was working fine, until April 15 at 13.00 Rome time.
Then, I stopped receiving notifications and the following day when checking for the reason I discovered the error "No parsable JSON found in this document".
But I tried everything and I cannot understand why it does that.

URL is https://hades.subito.it/v1/search/items?q=gameboy&t=s&qso=true&shp=true&urg=false&sort=datedesc&lim=5&start=0
It retrieves the last 5 ads, in this case.
It replies with json content both on my client and on the server I run changedetection on, so I have not been banned by the API.
I checked on https://jsonlint.com/ and the result is ok.

But most of all, if I run the filter preview in changedetection watch settings, it applies it as it should and it doesn't complain.

I updated the software to the latest version and it still gives the error.
I'm running this watch in plaintext mode.
Filters are:

json:$.ads[*].subject
json:$.ads[*].body
json:$.ads[*].features[?(@.uri == "/price")].values[0].value
json:$.ads[*].urls.default

I hope someone can help me find out what's happening.
Thanks!

[dgtlmoon]

Then, I stopped receiving notifications and the following day when checking for the reason I discovered the error "No parsable JSON found in this document".

I got 403 from central europe, it could be that the JSON filter is trying to process the 403 document and not the json

on the 'watch overview' listing page, what is the status, is it red? and where exactly does it say "No parsable JSON found.." ?

[andreagdipaolo]

Sorry, didn't see your reply's notification.
I believe it has protection against foreign IPs.
My VPS is in Italy. Can you confirm that the preview is fetched by the server and not by the client the webui is loaded on?

on the 'watch overview' listing page, what is the status, is it red? and where exactly does it say "No parsable JSON found.." ?

[dgtlmoon]

My VPS is in Italy. Can you confirm that the preview is fetched by the server and not by the client the webui is loaded on?

yes only the server in which changedetection.io runs from fetches the page

[andreagdipaolo]

So, if the preview is right then the json is actually fetched correctly. Am I wrong?
I don't understand the mismatch. It makes little sense that on the same instance the parsing fails and successes in two different sections if the parser is the same.

Can I help you somehow in the troubleshooting?

[andreagdipaolo]

I don't know how to proceed, I am lost.

[andreagdipaolo]

@dgtlmoon Any idea? could you help me troubleshoot? It makes no sense, apparently.
Should I file a bug report in the issues?