Rudder

Seems to be an error for ca-certificate (you can see the entire log in attachement) :

Setting up ca-certificates-java (20190909) ...
head: cannot open '/etc/ssl/certs/java/cacerts' for reading: No such file or directory
Exception in thread "main" java.lang.InternalError: Error loading java.security file
    at java.base/java.security.Security.initialize(Security.java:106)
    at java.base/java.security.Security$1.run(Security.java:84)
    at java.base/java.security.Security$1.run(Security.java:82)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
    at java.base/java.security.Security.<clinit>(Security.java:82)
    at java.base/sun.security.jca.ProviderList.<init>(ProviderList.java:178)
    at java.base/sun.security.jca.ProviderList$2.run(ProviderList.java:96)
    at java.base/sun.security.jca.ProviderList$2.run(ProviderList.java:94)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
    at java.base/sun.security.jca.ProviderList.fromSecurityProperties(ProviderList.java:93)
    at java.base/sun.security.jca.Providers.<clinit>(Providers.java:55)
    at java.base/sun.security.jca.GetInstance.getInstance(GetInstance.java:156)
    at java.base/java.security.cert.CertificateFactory.getInstance(CertificateFactory.java:193)
    at org.debian.security.KeyStoreHandler.<init>(KeyStoreHandler.java:50)
    at org.debian.security.UpdateCertificates.<init>(UpdateCertificates.java:65)
    at org.debian.security.UpdateCertificates.main(UpdateCertificates.java:51)