Many "unexpected token IDENTIFIER" (BRA-OPEN) in logs

[svenha]

Starting some months ago, my Hop logs are full of such errors:

File "-", character 439:                                                                                                                                                                                                                                                                                        
*** ERROR:parser:                                                                                                                                                                                                                                                                                                              
parse error (unexpected token `BRA-OPEN') -- BRA-OPEN ({)                                                                                                                                                                                                                                                                      
 1. javascript-parser@__hop_json, /var/tmp/...@4939                                                                                                                                                                                                                                                               
 3. json->obj1226, /var/tmp/...@2305                                                                                                                                                                                                                                                                                        
 4. json->obj@__hop_json, /var/tmp/...@2250                                                                                                                                                                                                                                                                                 
 5. service-parse-request-post@__hop_service, /var/tmp/...@18783                                                                                                                                                                                                                                                            
 6. service-parse-request@__hop_service, /var/tmp/...@23607                                                                                                                                                                                                                                                                 
 7. service-handler@__hop_service, /var/tmp/...@26877                                                                                                                                                                                                                                                                       
 8. service-apply@__hop_service, /var/tmp/...@25822                                                                                                                                                                                                                                                                         
 9. service-filter@__hop_service, /var/tmp/...@32518                                                                                                                                                                                                                                                                        
 10. request->response@__hop_hop, /var/tmp/...@6656 

Same for IDENTIFIER. They all come from some malicious requests.
Is there a way to keep the log cleaner?