Purge pages with arguments /purge/?*

[elvishp2006]

I have some pages like / and /example and using proxy_cache_key $uri$is_args$args;, so I have some cached pages with /?a=1. So I don't wanna purge the entire cache with /purge/*, I want just to purge cached pages with additional params, like this /purge/?*. That request get endless and Nginx give me that log:

nginx_1   | 2020/07/26 04:32:04 [alert] 1#1: worker process 3321 exited on signal 11
nginx_1   | 2020/07/26 04:32:04 [alert] 1#1: worker process 3322 exited on signal 11
nginx_1   | 2020/07/26 04:32:04 [alert] 1#1: worker process 3323 exited on signal 11
nginx_1   | 2020/07/26 04:32:04 [alert] 1#1: worker process 3324 exited on signal 11