Apache Httpd process crashes

Question

I'm using httpd 2.4.52 and openssl 1.1.1m on windows.

Apache crashes and I get the following error in the apache log: AH00428: Parent: child process exited with status 3221226356 -- Restarting

It seems to be happening at times when child process exists (graceful restart on max connections) and there's a number of websocket connections that are present at that time. MaxConnectionsPerChild is set to 2M.

Backtrace:

           mod_proxy.so!connection_cleanup(void * theconn) Line 1555     C
           mod_proxy.so!ap_proxy_release_connection(const char * proxy_function, proxy_conn_rec * conn, server_rec * s) Line 2551     C
           [Inline Frame] mod_proxy_http.so!ap_proxy_http_cleanup(const char *) Line 1807            C
           mod_proxy_http.so!proxy_http_handler(request_rec * r, proxy_worker * worker, proxy_server_conf * conf, char * url, const char * proxyname, unsigned short proxyport) Line 2049 C
           mod_proxy.so!proxy_run_scheme_handler(request_rec * r, proxy_worker * worker, proxy_server_conf * conf, char * url, const char * proxyhost, unsigned short proxyport) Line 3432        C
           mod_proxy.so!proxy_handler(request_rec * r) Line 1507                C
           libhttpd.dll!ap_run_handler(request_rec * r) Line 169      C
           libhttpd.dll!ap_invoke_handler(request_rec * r) Line 445               C
           libhttpd.dll!ap_process_async_request(request_rec * r) Line 452                C
           libhttpd.dll!ap_process_request(request_rec * r) Line 489             C
           libhttpd.dll!ap_process_http_sync_connection(conn_rec * c) Line 219     C
           libhttpd.dll!ap_run_process_connection(conn_rec * c) Line 42     C
           libhttpd.dll!ap_process_connection(conn_rec * c, void * csd) Line 219      C
           libhttpd.dll!worker_main(void * thread_num_val) Line 835           C
           kernel32.dll!BaseThreadInitThunk ()       Unknown
           ntdll.dll!00007ffd803f1791()        Unknown

Has anyone encountered a similar issue? Any ideas how to resolve?

Thanks