I am doing mTLS authentication . I am having trouble pinpointing the exact issue because this happens intermittently. I have two clients setup for this and this happens especially on only one client.
Below errors seem to randomly pop up

[info] 31561#31561: *359835776 SSL_write() failed (104: Connection reset by peer) while sending to client, client
[info] 11969#11969: *402978165 SSL_write() failed (32: Broken pipe) while sending to client

This is my nginx version

nginx version: nginx/1.20.1
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
built with OpenSSL 1.1.1g FIPS 21 Apr 2020
TLS SNI support enabled