Rocky 8.5 GnuTLS: An unexpected TLS packet was received

Hello. I recently migrated from CentOS 8 to Rocky 8 (8.5) using the Rocky Linux migration script. The migration went smoothly. However a Perl app that allows file downloads using https (https is provided via stunnel launched via xinetd) has stopped working. The following error occurs:

$ wget https://fqdn/file.tar
GnuTLS: An unexpected TLS packet was received.
Unable to establish SSL connection.

There have been no changes to the server in terms of hostname, IP, SSL certs, or other configuration. Testing the SSL connection via openssl seems to indicate everything is well:

$ openssl s_client -debug -connect fqdn:443

SSL handshake has read 5 bytes and written 325 bytes
Verification: OK

Verify return code: 0 (ok)

stunnel logs also don’t indicate any errors. I reinstalled Perl SSL modules but no effect. So not sure what may be going on. Any help/pointers would be appreciated.

Other relevant info:

$ cat /etc/redhat-release
Rocky Linux release 8.5 (Green Obsidian)

$ dnf list installed | grep -i tls
gnutls.x86_64 3.6.16-4.el8 @baseos
gnutls-dane.x86_64 3.6.16-4.el8 @appstream
gnutls-utils.x86_64 3.6.16-4.el8 @appstream
rsyslog-gnutls.x86_64 8.2102.0-5.el8 @appstream

$ dnf list installed | grep -i ssl
apr-util-openssl.x86_64 1.6.1-6.el8.1 @appstream
mod_ssl.x86_64 1:2.4.37-43.module+el8.5.0+714+5ec56ee8 @appstream
openssl.x86_64 1:1.1.1k-4.el8 @baseos
openssl-devel.x86_64 1:1.1.1k-4.el8 @baseos
openssl-libs.x86_64 1:1.1.1k-4.el8 @baseos
openssl-pkcs11.x86_64 0.4.10-2.el8 @baseos
perl-IO-Socket-SSL.noarch 2.066-4.module+el8.4.0+512+d4f0fc54 @appstream
perl-Net-SSLeay.x86_64 1.88-1.module+el8.4.0+512+d4f0fc54 @appstream
python3-pyOpenSSL.noarch 19.0.0-1.el8 @appstream
xmlsec1-openssl.x86_64 1.2.25-4.el8 @appstream

$ dnf list installed | grep -i stunnel
stunnel.x86_64 5.56-5.el8_3 @baseos