HTTP400 on function getDealByContactId about nodejs HOT 1 CLOSED

hi @tilman please add try catch block to below i.e. while parsing the response

var opportunity = JSON.parse(body);
success(opportunity);

this to

             try {
                       var opportunity = JSON.parse(body);
                        success(opportunity);
                    } catch (ex) {
                            return body;
                    }

This will resolve your problem,
In case you need more information regarding Agile CRM REST API please check below main reference :

https://github.com/agilecrm/rest-api

Thanks,
Agile crm support team.

from nodejs.