Catch exceptions when parsing invalid json

src/connection.cpp

@@ -384,16 +384,23 @@ void Executor::run()
             emit handleError(response);
         }
     }
-    auto parsed = json::parse(
-        response.toStdString().c_str(),
-        nullptr,
-        false
-    );
-    if (parsed.is_discarded() || parsed.is_null()) {
+    try {
+        auto parsed = json::parse(
+            response.toStdString().c_str(),
+            nullptr,
+            false
+        );
+
+        if (parsed.is_discarded() || parsed.is_null()) {
+            emit handleError(response);
+        } else {
+            emit responseReady(parsed);
+        }
+    } catch (const std::exception& e)  {
+        DEBUG("exception when parsing json: " << e.what() );
         emit handleError(response);
-    } else {
-        emit responseReady(parsed);
     }
+
 }
 
 void Callback::processRPCCallback(json resp)