I'm having a similar issue - although I'm using version 4.4 and the stack trace is slightly different. It's a fresh install on Ubuntu 20.x
```
[INFO ] 2022-07-27 06:44:15.545 [main] ServerEntry -
[INFO ] 2022-07-27 06:44:15.563 [main] ServerEntry -
[INFO ] 2022-07-27 06:44:15.564 [main] ServerEntry - +---------------------------------------------------------+
[INFO ] 2022-07-27 06:44:15.564 [main] ServerEntry - + Gluu Radius Server +
[INFO ] 2022-07-27 06:44:15.564 [main] ServerEntry - + Copyright (c) Gluu Inc. +
[INFO ] 2022-07-27 06:44:15.565 [main] ServerEntry - +---------------------------------------------------------+
[INFO ] 2022-07-27 06:44:15.565 [main] ServerEntry - Starting application in server mode. Configuration file: /etc/gluu/conf/radius/gluu-radius.properties
[INFO ] 2022-07-27 06:44:15.566 [main] ServerEntry - Initializing security components
[INFO ] 2022-07-27 06:44:15.879 [main] ServerEntry - Security components initialization successful
[INFO ] 2022-07-27 06:44:15.879 [main] ServerEntry - Registering bootstrap configuration service
[INFO ] 2022-07-27 06:44:15.903 [main] ServerEntry - Bootstrap configuration service registered
[INFO ] 2022-07-27 06:44:15.903 [main] ServerEntry - Initializing persistence layer
[INFO ] 2022-07-27 06:44:16.114 [main] Reflections - Reflections took 136 ms to scan 11 urls, producing 41 keys and 130 values
[INFO ] 2022-07-27 06:44:16.146 [main] PersistanceFactoryService - Found '5' PersistenceEntryManagerFactory
[INFO ] 2022-07-27 06:44:16.146 [main] PersistanceFactoryService - Found PersistenceEntryManagerFactory 'class org.gluu.orm.couchbase.impl.CouchbaseEntryManagerFactory'
[INFO ] 2022-07-27 06:44:16.178 [main] PersistanceFactoryService - Found PersistenceEntryManagerFactory 'class org.gluu.persist.sql.impl.SqlEntryManagerFactory'
[INFO ] 2022-07-27 06:44:16.179 [main] PersistanceFactoryService - Found PersistenceEntryManagerFactory 'class org.gluu.orm.hybrid.impl.HybridEntryManagerFactory'
[INFO ] 2022-07-27 06:44:16.179 [main] PersistanceFactoryService - Found PersistenceEntryManagerFactory 'class org.gluu.persist.ldap.impl.LdapEntryManagerFactory'
[INFO ] 2022-07-27 06:44:16.180 [main] PersistanceFactoryService - Found PersistenceEntryManagerFactory 'class org.gluu.persist.cloud.spanner.impl.SpannerEntryManagerFactory'
[INFO ] 2022-07-27 06:44:16.477 [main] LdapConnectionProvider - Attempting to create connection pool: 1
[INFO ] 2022-07-27 06:44:17.274 [main] LdapConnectionProvider - Attempting to create connection pool: 1
[INFO ] 2022-07-27 06:44:17.603 [main] LdapConnectionProvider - Attempting to create connection pool: 1
[INFO ] 2022-07-27 06:44:18.235 [main] LdapEntryManagerFactory - Created LdapEntryManager: org.gluu.persist.ldap.operation.impl.LdapOperationServiceImpl@1b29d52b
[INFO ] 2022-07-27 06:44:18.236 [main] ServerEntry - Persistence layer initialization successful
[INFO ] 2022-07-27 06:44:18.237 [main] ServerEntry - Registering clients service
[INFO ] 2022-07-27 06:44:18.238 [main] ServerEntry - Clients service registration successful
[INFO ] 2022-07-27 06:44:18.241 [main] ServerEntry - Registering server configuration service
[INFO ] 2022-07-27 06:44:18.242 [main] ServerEntry - Server configuration service registration failed
[INFO ] 2022-07-27 06:44:18.249 [main] ServerEntry - Registering OpenID configuration service
[INFO ] 2022-07-27 06:44:19.157 [main] ServerEntry - OpenID configuration service registration successful
[INFO ] 2022-07-27 06:44:19.157 [main] ServerEntry - Registering cryptographic service
[ERROR] 2022-07-27 06:44:19.167 [main] ServerEntry - Security Mode wasn't initialized. Call installBCProvider() before
java.security.InvalidParameterException: Security Mode wasn't initialized. Call installBCProvider() before
at org.gluu.oxauth.model.crypto.OxAuthCryptoProvider.solveKeyStorageType(OxAuthCryptoProvider.java:560) ~[oxauth-model-4.4.0.Final.jar:?]
at org.gluu.oxauth.model.crypto.OxAuthCryptoProvider.<init>(OxAuthCryptoProvider.java:104) ~[oxauth-model-4.4.0.Final.jar:?]
at org.gluu.oxauth.model.crypto.OxAuthCryptoProvider.<init>(OxAuthCryptoProvider.java:94) ~[oxauth-model-4.4.0.Final.jar:?]
at org.gluu.oxauth.model.crypto.OxAuthCryptoProvider.<init>(OxAuthCryptoProvider.java:90) ~[oxauth-model-4.4.0.Final.jar:?]
at org.gluu.radius.service.CryptoService.<init>(CryptoService.java:63) ~[super-gluu-radius-server.jar:?]
at org.gluu.radius.ServerEntry.registerCryptoService(ServerEntry.java:355) ~[super-gluu-radius-server.jar:?]
at org.gluu.radius.ServerEntry.main(ServerEntry.java:145) ~[super-gluu-radius-server.jar:?]
[ERROR] 2022-07-27 06:44:19.172 [main] ServerEntry - Cryptographic service registration failed
```