NPE with fdb-storage-type set as s3

[anujsrc]

Configured Fluree with :fdb-storage-type "s3"and started a single instance. It gets connected to S3 and can also write snapshots to the configured S3 bucket at shutdown but while starting it gives a java.lang.NullPointerException: null at fluree.db.ledger.storage.s3store$connection_storage_list$fn__42297$fn__42298.invoke(s3store.clj:165).

Here are the logs that have the server settings/config as well:

2023-06-27 12:26:43,448 INFO  f.db.server-settings - Properties file ./fluree_sample.properties successfully loaded. -
2023-06-27 12:26:43,450 INFO  fluree.db.server - Starting Fluree in mode: dev -
2023-06-27 12:26:43,513 INFO  fluree.db.server - Starting with config:
 {:fdb-api-open "true",
 :fdb-api-port 8090,
 :fdb-consensus-type "raft",
 :fdb-encryption-secret nil,
 :fdb-group-catch-up-rounds "10",
 :fdb-group-config-path "./",
 :fdb-group-heartbeat nil,
 :fdb-group-log-directory "./data/group",
 :fdb-group-log-history "5",
 :fdb-group-port nil,
 :fdb-group-private-key nil,
 :fdb-group-private-key-file "default-private-key.txt",
 :fdb-group-servers "myserver@localhost:9790",
 :fdb-group-snapshot-path "data/group/snapshots",
 :fdb-group-snapshot-threshold "200",
 :fdb-group-this-server "myserver",
 :fdb-group-timeout "2000",
 :fdb-join? false,
 :fdb-json-bigdec-string "true",
 :fdb-ledger-private-keys nil,
 :fdb-ledger-servers nil,
 :fdb-license-key nil,
 :fdb-memory-cache "200mb",
 :fdb-memory-reindex "1mb",
 :fdb-memory-reindex-max "2mb",
 :fdb-mode "dev",
 :fdb-pw-auth-enable "true",
 :fdb-pw-auth-jwt-max-exp "1y",
 :fdb-pw-auth-jwt-max-renewal "1y",
 :fdb-pw-auth-jwt-secret nil,
 :fdb-pw-auth-secret "fluree",
 :fdb-pw-auth-signing-key nil,
 :fdb-query-peer-servers "localhost:8090",
 :fdb-stats-report-frequency "1m",
 :fdb-storage-file-directory nil,
 :fdb-storage-file-group-path "group/",
 :fdb-storage-file-ledger-path "ledger/",
 :fdb-storage-file-root "./data/",
 :fdb-storage-s3-bucket "fckb",
 :fdb-storage-s3-group-prefix "group/",
 :fdb-storage-s3-ledger-prefix "ledger/",
 :fdb-storage-type "s3"}
 -
2023-06-27 12:26:43,519 INFO  fluree.db.server - JVM arguments:  {:jvm "OpenJDK 64-Bit Server VM", :input ["-Xmx2g" "-Xms1g" "-XX:+UseG1GC" "-XX:MaxGCPauseMillis=50" "-Dfdb.properties.file=./fluree_sample.properties" "-Dfdb.log.ansi" "-Dfluree.db.log.level=INFO" "-Dfluree.raft.log.level=INFO" "-Dlogback.configurationFile=./logback.xml"]} -
2023-06-27 12:26:43,542 INFO  fluree.db.server - Memory Info:  {:used 0.3 GB, :committed 1.4 GB, :max 2.0 GB, :init 1.0 GB, :time 2023-06-27T06:56:43.542487Z} -
2023-06-27 12:26:43,624 INFO  f.d.l.storage.s3store - Connecting to S3 bucket fckb -
2023-06-27 12:26:44,305 INFO  f.d.l.storage.s3store - Connecting to S3 bucket fckb -
. 2023-06-27 12:26:46,351 INFO  fluree.db.peer.http-api - Starting web server on port: 8090 with an open API. -
2023-06-27 12:26:46,351 INFO  fluree.db.peer.http-api -  -
2023-06-27 12:26:46,351 INFO  fluree.db.peer.http-api - http://localhost:8090 -
2023-06-27 12:26:46,352 INFO  fluree.db.peer.http-api -  -
2023-06-27 12:26:49,885 INFO  f.d.l.consensus.raft - Ledger group leader change: {:cause :become-leader, :server myserver, :new-leader myserver, :old-leader nil, :event :become-leader, :message This server, myserver, received the majority of the votes to become leader. New term: 1, latest index: 0.} -
2023-06-27 12:26:49,886 INFO  fluree.db.server - This server just became leader of the raft group. -
2023-06-27 12:26:49,925 INFO  f.d.l.consensus.raft - Brand new Fluree instance. -
2023-06-27 12:26:49,926 INFO  f.d.l.consensus.raft - Using default private key obtained from configuration settings. -
2023-06-27 12:26:49,936 ERROR fluree.db.server - Uncaught exception on async-thread-macro-2 - java.lang.NullPointerException: null\n    at clojure.java.io$as_relative_path.invokeStatic(io.clj:414)\n  at clojure.java.io$file.invokeStatic(io.clj:426)\n at clojure.java.io$file.invoke(io.clj:418)\n    at fluree.db.ledger.storage.s3store$connection_storage_list$fn__42297$fn__42298.invoke(s3store.clj:165)\n       at clojure.core.async$thread_call$fn__6142.invoke(async.clj:484)\n at clojure.lang.AFn.run(AFn.java:22)\n  at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n  at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n     at java.base/java.lang.Thread.run(Thread.java:829)\n

2023-06-27 12:27:46,370 INFO  fluree.db.ledger.stats - Memory:  {"used":"0.1 GB","committed":"1.4 GB","max":"2.0 GB","init":"1.0 GB","time":"2023-06-27T06:57:46.370628Z"} -
2023-06-27 12:27:46,372 INFO  fluree.db.ledger.stats - Group state:  {"version":3,"leases":{"servers":{"myserver":{"id":"myserver","expire":1687849069013}}}} -
2023-06-27 12:28:46,375 INFO  fluree.db.ledger.stats - Memory:  {"used":"0.1 GB","committed":"1.4 GB","max":"2.0 GB","init":"1.0 GB","time":"2023-06-27T06:58:46.374721Z"} -
2023-06-27 12:28:46,375 INFO  fluree.db.ledger.stats - Group state:  {"version":3,"leases":{"servers":{"myserver":{"id":"myserver","expire":1687849129094}}}} -

2023-06-27 12:29:11,895 INFO  fluree.db.server - SHUTDOWN Start -
2023-06-27 12:29:11,899 INFO  fluree.raft - Shutting down raft -
2023-06-27 12:29:11,901 INFO  f.d.l.consensus.raft - Ledger group snapshot write triggered for index: 49 -
2023-06-27 12:29:13,279 INFO  f.d.l.consensus.raft - Ledger group snapshot completed for index 49 in 1378 milliseconds. -
2023-06-27 12:29:13,279 INFO  fluree.raft - Wrote final snapshot at for index 49 -
. 2023-06-27 12:29:13,522 INFO  f.d.ledger.consensus.tcp - Shutting down tcp server on port 9790 -
2023-06-27 12:29:13,524 INFO  f.d.l.storage.s3store - Closing connection to S3 -
2023-06-27 12:29:13,525 INFO  fluree.db.util.log - :conn-closed -
2023-06-27 12:29:13,527 INFO  fluree.db.server - SHUTDOWN Complete -