Cannot access AWS ECS resources when using v1.32

[dluong777]

Version report

Jenkins and plugins versions report:

Jenkins: 2.319
OS: Linux - 4.14.248-129.473.amzn1.x86_64
---
Parameterized-Remote-Trigger:3.1.5.1
ace-editor:1.1
amazon-ecr:1.6
amazon-ecs:1.24
ansicolor:1.0.0
ant:1.12
antisamy-markup-formatter:2.1
apache-httpcomponents-client-4-api:4.5.13-1.0
authentication-tokens:1.4
aws-batch:2.8
aws-credentials:1.32
aws-java-sdk:1.11.700
aws-java-sdk-ec2:1.12.101-300.vc09c7be9cb57
aws-java-sdk-minimal:1.12.101-300.vc09c7be9cb57
badge:1.8
bootstrap4-api:4.6.0-3
bootstrap5-api:5.1.1-1
bouncycastle-api:2.20
branch-api:2.7.0
build-timeout:1.20
build-token-root:1.7
bulk-builder:1.5
caffeine-api:2.9.2-29.v717aac953ff3
categorized-view:1.12
checks-api:1.7.2
cloudbees-folder:6.16
command-launcher:1.6
conditional-buildstep:1.4.1
credentials:2.6.2
credentials-binding:1.27
dashboard-view:2.17
display-url-api:2.3.5
docker-commons:1.17
docker-workflow:1.26
durable-task:1.39
echarts-api:5.2.1-2
email-ext:2.84
external-monitor-job:1.7
extra-columns:1.24
font-awesome-api:5.15.4-1
ghprb:1.42.2
git:4.8.3
git-client:3.10.0
git-server:1.10
github:1.34.1
github-api:1.133
github-branch-source:2.11.3
google-login:1.6
gradle:1.37.1
groovy:2.4
groovy-postbuild:2.5
handlebars:3.0.8
jackson2-api:2.13.0-230.v59243c64b0a5
javadoc:1.6
jdk-tool:1.5
jjwt-api:0.11.2-9.c8b45b8bb173
job-dsl:1.77
jobConfigHistory:2.28.1
jquery:1.12.4-1
jquery-detached:1.2.1
jquery3-api:3.6.0-2
jsch:0.1.55.2
junit:1.53
ldap:2.7
localization-support:1.1
localization-zh-cn:1.0.24
lockable-resources:2.11
mailer:1.34
mapdb-api:1.0.9.0
matrix-auth:2.6.8
matrix-project:1.19
maven-plugin:3.12
momentjs:1.1.1
monitoring:1.88.0
naginator:1.18.1
okhttp-api:3.14.9
pam-auth:1.6
parameterized-trigger:2.41
pipeline-build-step:2.15
pipeline-github-lib:1.0
pipeline-graph-analysis:1.11
pipeline-input-step:2.12
pipeline-milestone-step:1.3.2
pipeline-model-api:1.9.2
pipeline-model-definition:1.9.2
pipeline-model-extensions:1.9.2
pipeline-rest-api:2.19
pipeline-stage-step:2.5
pipeline-stage-tags-metadata:1.9.2
pipeline-stage-view:2.19
plain-credentials:1.7
plugin-usage-plugin:1.2
plugin-util-api:2.5.0
popper-api:1.16.1-2
popper2-api:2.10.1-1
rebuild:1.32
resource-disposer:0.16
run-condition:1.5
scm-api:2.6.5
script-security:1.78
slack:2.48
snakeyaml-api:1.29.1
ssh-agent:1.23
ssh-credentials:1.19
ssh-slaves:1.33.0
sshd:3.1.0
structs:1.23
subversion:2.15.1
thinBackup:1.10
timestamper:1.13
token-macro:266.v44a80cf277fd
trilead-api:1.0.13
variant:1.4
windows-slaves:1.8
workflow-aggregator:2.6
workflow-api:2.46
workflow-basic-steps:2.24
workflow-cps:2.94
workflow-cps-global-lib:2.21
workflow-durable-task-step:2.39
workflow-job:2.41
workflow-multibranch:2.26
workflow-scm-step:2.13
workflow-step-api:2.24
workflow-support:3.8
ws-cleanup:0.39

• What Operating System are you using (both controller, and any agents involved in the problem)?

Linux 

Reproduction steps

• Clean Jenkins install v2.319
• Using AWS Credentials Plugins v1.32
• Assigned IAM Role for Jenkins master instance (AWS EC2) to be able to get information for a AWS ECS Cluster (ListContainerInstances and DescribeContainerInstances)
• Install Amazon Elastic Container Service (ECS) / Fargate (https://plugins.jenkins.io/amazon-ecs/) v1.24
• Go to Manage Jenkins -> Configure System -> Configure Clouds -> Click on Add a new cloud

Results

Expected result:

Able to see the list of ECS Cluster resources based on the IAM Role granted to Jenkins master server.

Actual result:

• Cannot retrieve the expected ECS Cluster Resources

• The small window inside show errors A Problem occurred while processing the request
  

• Checking the Jenkins System Logs, in turns out there was an issue with java.lang.LinkageError: loader constraint violation: loader (instance of jenkins/util/AntClassLoader) previously initiated loading for a different type with name "com/amazonaws/ClientConfiguration". Please refer to log
  aws-cloudbess-error.log

Note
Downgrade AWS Credentials Plugins to v1.30, it works properly and can retrieve the expected ECS Cluster Resources