getting issue in the shared credentials path

[GadiVikram111]

Getting below error while creating AWS client

shared_credentials.rb:36:in initialize': undefined method []' for nil:NilClass (NoMethodError)
User->aws->credentials

Code:
def uploadS3
credentials = Aws::SharedCredentials.new(ENV['default'])
s3 = Aws::S3::Client.new(
region: "us-east-1",
credentials: credentials
)
#Upload
puts "sending file to s3"
env=File.read('base/env.json')
env = JSON.parse(env)
time1= Time.new
time2=time1.strftime("%Y-%m-%d-%H-%M-%S")
filename="#{time2}-API-Automation-#{env['env_name']}-#{env['build_number']}"
puts filename

    File.open('./reports/testReportst.xml', 'rb') do |file|
      puts "start uploading #{'./reports/testReportst.xml'} to s3"
      resp = s3.put_object(bucket: @@BUCKET_NAME, key: filename, body: file)
      puts resp
    end
    puts "File should be available at https://#{@BUCKET_NAME}.s3.amazonaws.com/#{filename}"
  end

end

ERROR:
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/shared_credentials.rb:36:in initialize': undefined method []' for nil:NilClass (NoMethodError)
from ./send_xmltos3.rb:12:in new' from ./send_xmltos3.rb:12:in uploadS3'
from ./send_xmltos3.rb:34:in `

'

[mullermp]

You shouldn't need to create an instance of shared credentials. The default profile should be loaded when you create your s3 client.

[GadiVikram111]

removed instance for shared credentials

Getting below error
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sigv4-1.6.0/lib/aws-sigv4/signer.rb:701:in fetch_credentials': undefined method credentials' for Aws::SharedCredentials:Class (NoMethodError)
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sigv4-1.6.0/lib/aws-sigv4/signer.rb:238:in sign_request' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/sign.rb:128:in sign'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/sign.rb:47:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/transfer_encoding.rb:26:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/helpful_socket_errors.rb:12:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/s3_signer.rb:48:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/redirects.rb:20:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/retry_errors.rb:360:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/user_agent.rb:37:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/md5s.rb:31:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/http_checksum.rb:19:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/endpoint_pattern.rb:30:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/checksum_algorithm.rb:136:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/expect_100_continue.rb:23:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/bucket_name_restrictions.rb:21:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/rest/handler.rb:10:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/recursion_detection.rb:18:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/endpoints.rb:41:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/endpoint_discovery.rb:84:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/seahorse/client/plugins/endpoint.rb:47:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/param_validator.rb:26:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/seahorse/client/plugins/raise_response_errors.rb:16:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/sse_cpk.rb:24:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/dualstack.rb:21:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/plugins/accelerate.rb:43:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/checksum_algorithm.rb:111:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/jsonvalue_converter.rb:16:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/idempotency_token.rb:19:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/param_converter.rb:26:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/seahorse/client/plugins/request_callback.rb:71:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/aws-sdk-core/plugins/response_paging.rb:12:in call' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/seahorse/client/plugins/response_target.rb:24:in call'
from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-core-3.176.1/lib/seahorse/client/request.rb:72:in send_request' from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/aws-sdk-s3-1.127.0/lib/aws-sdk-s3/client.rb:12684:in put_object'
from ./send_xmltos3.rb:28:in block in uploadS3' from ./send_xmltos3.rb:26:in open'
from ./send_xmltos3.rb:26:in uploadS3' from ./send_xmltos3.rb:34:in

'

[mullermp]

I was trying to say what @alextwoods says below. If your credentials are in ~/.aws/credentials under a default profile, they will be automatically loaded. See here: https://docs.aws.amazon.com/sdk-for-ruby/v3/developer-guide/setup-config.html

[alextwoods]

The credential provider chain will automatically resolve the profile credentials - you can create your client with:

s3 = Aws::S3::Client.new(
region: "us-east-1" # don't provide the `credentials` argument here, this will then use the credential provider chain and resolve credentials from the default profile.
)