Errors running Plugin

[mp3monster]

Thev plugin is recording errors:
I, [2022-07-23T19:01:58.046070 #119823] INFO -- : Generating payload with 10 records for oci_la_log_group_id: ocid1.loganalyticsloggroup.oc1.iad.amaaaaaanlc5nbyand4wliozrxbvqamhncpuzq7g7qfxt7bjmagkach5np7a
E, [2022-07-23T19:01:58.047432 #119823] ERROR -- : oci upload exception : Error while uploading the payload. undefined method upload_log_events_file' for nil:NilClass I, [2022-07-23T19:02:08.060741 #119823] INFO -- : Received new chunk, started processing ... I, [2022-07-23T19:02:08.061179 #119823] INFO -- : Generating payload with 10 records for oci_la_log_group_id: ocid1.loganalyticsloggroup.oc1.iad.amaaaaaanlc5nbyand4wliozrxbvqamhncpuzq7g7qfxt7bjmagkach5np7a E, [2022-07-23T19:02:08.063550 #119823] ERROR -- : oci upload exception : Error while uploading the payload. undefined method upload_log_events_file' for nil:NilClass
I, [2022-07-23T19:02:18.075544 #119823] INFO -- : Received new chunk, started processing ...
I, [2022-07-23T19:02:18.076096 #119823] INFO -- : Generating payload with 10 records for oci_la_log_group_id: ocid1.loganalyticsloggroup.oc1.iad.amaaaaaanlc5nbyand4wliozrxbvqamhncpuzq7g7qfxt7bjmagkach5np7a
E, [2022-07-23T19:02:18.077373 #119823] ERROR -- : oci upload exception : Error while uploading the payload. undefined method upload_log_events_file' for nil:NilClass I, [2022-07-23T19:02:28.089768 #119823] INFO -- : Received new chunk, started processing ... I, [2022-07-23T19:02:28.090203 #119823] INFO -- : Generating payload with 10 records for oci_la_log_group_id: ocid1.loganalyticsloggroup.oc1.iad.amaaaaaanlc5nbyand4wliozrxbvqamhncpuzq7g7qfxt7bjmagkach5np7a E, [2022-07-23T19:02:28.091565 #119823] ERROR -- : oci upload exception : Error while uploading the payload. undefined method upload_log_events_file' for nil:NilClass

Using fluentd 1.12.3 on Ubuntu OCI image:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.4 LTS
Release: 20.04
Codename: focal

installed gems:
aws-eventstream (1.2.0)
aws-partitions (1.602.0)
aws-sdk-core (3.131.2)
aws-sigv4 (1.5.0)
benchmark (default: 0.1.0)
bigdecimal (default: 2.0.0)
bundler (default: 2.1.2)
cgi (default: 0.1.0)
concurrent-ruby (1.1.10)
cool.io (1.7.1)
csv (default: 3.1.2)
date (default: 3.0.0)
dbm (default: 1.1.0)
delegate (default: 0.1.0)
did_you_mean (default: 1.4.0)
etc (default: 1.1.0)
excon (0.92.3)
faraday (1.10.0)
faraday-em_http (1.0.0)
faraday-em_synchrony (1.0.0)
faraday-excon (1.1.0)
faraday-httpclient (1.0.1)
faraday-multipart (1.0.4)
faraday-net_http (1.0.1)
faraday-net_http_persistent (1.2.0)
faraday-patron (1.0.0)
faraday-rack (1.0.0)
faraday-retry (1.0.3)
faraday_middleware-aws-sigv4 (0.6.1)
fcntl (default: 1.0.0)
fiddle (default: 1.0.0)
fileutils (default: 1.4.1)
fluent-plugin-oci-logging-analytics (2.0.4)
fluent-plugin-opensearch (1.0.7)
fluent-plugin-slack (0.6.7)
fluent-plugin-suppress (1.1.0)
fluentd (1.15.0)
forwardable (default: 1.3.1)
gdbm (default: 2.1.0)
getoptlong (default: 0.1.0)
http_parser.rb (0.8.0)
inifile (3.0.0)
io-console (default: 0.5.3)
ipaddr (default: 1.2.2)
irb (default: 1.2.1)
jmespath (1.6.1)
json (default: 2.3.0)
jwt (2.4.1)
logger (default: 1.4.2)
matrix (default: 0.2.0)
minitest (5.13.0)
msgpack (1.5.3)
multi_json (1.15.0)
multipart-post (2.2.3)
mutex_m (default: 0.1.0)
net-pop (default: 0.1.0)
net-smtp (default: 0.1.0)
net-telnet (0.1.1)
observer (default: 0.1.0)
oci (2.17.0)
open3 (default: 0.1.0)
opensearch-api (2.0.2)
opensearch-ruby (2.0.2)
opensearch-transport (2.0.0)
openssl (default: 2.1.2)
ostruct (default: 0.2.0)
power_assert (1.1.7)
prime (default: 0.1.1)
prometheus-client (4.0.0)
pstore (default: 0.1.0)
psych (default: 3.1.0)
racc (default: 1.4.16)
rake (13.0.1)
rdoc (default: 6.2.1)
readline (default: 0.0.2)
readline-ext (default: 0.1.0)
reline (default: 0.1.2)
rexml (default: 3.2.3)
rss (default: 0.2.8)
ruby2_keywords (0.0.5)
rubyzip (2.3.2)
sdbm (default: 1.0.0)
serverengine (2.3.0)
sigdump (0.2.4)
singleton (default: 0.1.0)
stringio (default: 0.1.0)
strptime (0.2.5)
strscan (default: 1.0.3)
test-unit (3.3.5)
timeout (default: 0.1.0)
tracer (default: 0.1.0)
tzinfo (2.0.4)
tzinfo-data (1.2022.1)
uri (default: 0.10.0)
webrick (default: 1.6.0)
xmlrpc (0.3.0)
yajl-ruby (1.4.3)
yaml (default: 0.1.0)
zlib (default: 1.1.0)

fluentd config:
@type dummy
tag dummy
auto_increment_key dummy_counter
dummy {"hello":"world"}

<filter *>
@type record_transformer
enable_ruby true

#oci_la_metadata KEY_VALUE_PAIRS
oci_la_entity_id "#{ENV['LOGGING_ANALYTICS_ENTITY_OCID']}"
oci_la_entity_type "#{ENV['LOGGING_ANALYTICS_ENTITY_TYPE']}"
# oci_la_log_source_name "#{ENV['LOGGING_ANALYTICS_SOURCENAME']}"
oci_la_log_source_name logging-test
oci_la_log_group_id "#{ENV['LOGGING_ANALYTICS_LOGGROUP_OCID']}"
#oci_la_log_path "${record['tailed_path']}"
message ${record}
tag ${tag}

<filter *>
@type stdout

<match *>
@type oci-logging-analytics
namespace "#{ENV['OCI_NAMESPACE']}"

Auth config file details

config_file_location        ~/oci-fluentd.conf
profile_name                DEFAULT

Configuration for plugin (oci-logging-analytics) generated logs

plugin_log_location "#{ENV['OCI_LOGFOLDER']}"
plugin_log_level   info
plugin_log_rotation hourly
plugin_log_age  daily
plugin_log_file_count 2
plugin_log_file_size 1MB

<buffer>
   @type file
   flush_at_shutdown true
   flush_mode interval
   flush_interval 10
   # overflow_action block
   overflow_action throw_exception
   disable_chunk_backup true
   path "#{ENV['OCI_LOGFOLDER_BUFFER']}"
   # path /home/ubuntu/Demo/oci-lo-buffer/test-buffer-${chunk_id}.log
   timekey_wait 30
   # append true
   chunk_limit_records 10
</buffer>