Catch json transform error

src/dodis-normalizer-transformer.ts

@@ -24,8 +24,8 @@ class DodisNormalizerTransformer extends Transform {
      * @private
      */
     public _transform(chunk, encoding, callback) {
-        const data = JSON.parse(chunk.res.body);
         try {
+            const data = JSON.parse(chunk.res.body);
             const res = {
                 id: data.data.id.toString(),
                 provider: 'dodis',
@@ -39,6 +39,10 @@ class DodisNormalizerTransformer extends Transform {
             return  callback(null, res);
 
         } catch (error) {
+            if(error.name === 'SyntaxError') {
+                this.logger.warn(`Could not parse ${chunk.url}`);
+                return callback(null);
+            }
             this.logger.error(error);
             return callback(error);
         }