Crash after parsing ca_cert

The Chirpstack MQTT Forwarder seems to crash after parsing a provided CA cert.
Running on Kerlink KerOS
Version 4.3.0

Configration:

[mqtt]
  #topic_prefix="eu868"
  server="ssl://redacted.com"
  username="redacted"
  password="redacted"
  ca_cert="/etc/chirpstack-mqtt-forwarder/chirpstack-mqtt-forwarder/USERTrustRSACertificationAuthority.crt"
  #tls_cert=""
  #tls_key=""
2024-09-02T11:03:51.666117+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: Could not get Gateway ID from backend, error: Gateway ID not yet set
2024-09-02T11:03:51.666198+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: Waiting for backend to report Gateway ID
2024-09-02T11:03:51.815276+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: PULL_DATA received, random_token: 49284, remote: 127.0.0.1:45446
2024-09-02T11:03:51.815358+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: Sending PULL_ACK, random_token: 49284, remote: 127.0.0.1:45446
2024-09-02T11:03:52.666404+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: Received Gateway ID from backend, gateway_id: <redacted>
2024-09-02T11:03:52.666480+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: Setting up MQTT client
2024-09-02T11:03:52.685907+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: Configuring client with TLS certificate, ca_cert: /etc/chirpstack-mqtt-forwarder/chirpstack-mqtt-forwarder/USERTrustRSACertificationAuthority.crt, tls_cert: , tls_key:
2024-09-02T11:03:52.701213+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1428]: add_parsable_certificates processed 129 valid and 0 invalid certs
2024-09-02T11:03:52.875661+00:00 klk-wiis-082F2E monit[997]: 'chirpstack-mqtt-forwarder' process is not running
2024-09-02T11:03:52.876162+00:00 klk-wiis-082F2E monit[997]: 'chirpstack-mqtt-forwarder' trying to restart
2024-09-02T11:03:52.876732+00:00 klk-wiis-082F2E monit[997]: 'chirpstack-mqtt-forwarder' start: '/bin/bash -c /etc/init.d/chirpstack-mqtt-forwarder start'
2024-09-02T11:03:52.941302+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1439]: Starting ChirpStack MQTT Forwarder (version: 4.3.0, docs: https://www.chirpstack.io/)
2024-09-02T11:03:52.941946+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1439]: Setting up Semtech UDP Packet Forwarder backend
2024-09-02T11:03:52.942344+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1439]: Setting up Semtech UDP packet-forwarder backend
2024-09-02T11:03:52.942698+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1439]: Binding UDP socket, bind: 0.0.0.0:1700
2024-09-02T11:03:52.943218+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1439]: Retrieving Gateway ID from backend
2024-09-02T11:03:52.943637+00:00 klk-wiis-082F2E chirpstack-mqtt-forwarder[1439]: Could not get Gateway ID from backend, error: Gateway ID not yet set