Expression evaluation error [evaluation ID = Z9SC3J0B] : [valid:false,syntaxError:false,value:Expression evaluation error: An error occurred while executing a save: com.appian.dl.repo.PersistException: 1 failure(s): ClusterBlockException[blocked by: [FORBI

We are getting following error while importing the patch on Production env

The System Has Encountered an Error
HTTP Code: 500
APNX-1-4198-000

Error Evaluating UI Expression
Expression evaluation error [evaluation ID = Z9SC3J0B] : [valid:false,syntaxError:false,value:Expression evaluation error: An error occurred while executing a save: com.appian.dl.repo.PersistException: 1 failure(s): ClusterBlockException[blocked by: [FORBIDDEN/12/index read-only / allow delete (api)];]]

Appian suggest to run following command but we are not able to run this command as well, Any pointer will be helpful.

curl -XPUT --header "Authorization: Basic YWRtaW46YQ==" "localhost:9200/_all/_settings" -H 'Content-Type: application/json' -d' { "index.blocks.read_only_allow_delete": null } '