# Troubleshooting Amazon Managed Workflows for Apache Airflow
<a name="troubleshooting"></a>

This chapter describes common issues and errors you can encounter when using Apache Airflow on Amazon Managed Workflows for Apache Airflow and recommended steps to resolve these errors.

**Contents**
+ [Troubleshooting: DAGs, Operators, Connections, and other issues](t-apache-airflow-202.md)
  + [Connections](t-apache-airflow-202.md#troubleshooting-conn-202)
    + [I can't connect to Secrets Manager](t-apache-airflow-202.md#access-secrets-manager)
    + [How do I configure `secretsmanager:ResourceTag/<tag-key>` secrets manager conditions or a resource restriction in my execution role policy?](t-apache-airflow-202.md#access-secrets-manager-condition-keys)
    + [I can't connect to Snowflake](t-apache-airflow-202.md#missing-snowflake)
    + [I can't find my connection in the Airflow UI](t-apache-airflow-202.md#connection-type-missing)
  + [Webserver](t-apache-airflow-202.md#troubleshooting-webserver-202)
    + [I get a 5xx error accessing the webserver](t-apache-airflow-202.md#5xx-webserver-202)
    + [I get a `The scheduler does not seem to be running` error](t-apache-airflow-202.md#error-scheduler-202)
  + [Tasks](t-apache-airflow-202.md#troubleshooting-tasks-202)
    + [I get my tasks stuck or not completing](t-apache-airflow-202.md#stranded-tasks-202)
    + [I get task failures without logs in Airflow v3](t-apache-airflow-202.md#failed-task-no-log)
  + [CLI](t-apache-airflow-202.md#troubleshooting-cli-202)
    + [I get a '503' error when triggering a DAG in the CLI](t-apache-airflow-202.md#cli-toomany-202)
    + [Why does the `dags backfill` Apache Airflow CLI command fail? Is there a workaround?](t-apache-airflow-202.md#troubleshooting-cli-backfill)
  + [Operators](t-apache-airflow-202.md#troubleshooting-operators-202)
    + [I received a `PermissionError: [Errno 13] Permission denied` error using the S3Transform operator](t-apache-airflow-202.md#op-s3-transform)
+ [Troubleshooting: Creating and updating an Amazon MWAA environment](t-create-update-environment.md)
  + [Updating `requirements.txt`](t-create-update-environment.md#troubleshooting-reqs)
    + [I specified a new version of my `requirements.txt` and it's taking more than 20 minutes to update my environment](t-create-update-environment.md#t-requirements)
  + [Plugins](t-create-update-environment.md#troubleshooting-plugins)
    + [Does Amazon MWAA support implementing custom UI?](t-create-update-environment.md#custom-ui)
  + [Create bucket](t-create-update-environment.md#troubleshooting-create-bucket)
    + [I can't select the option for S3 Block Public Access settings](t-create-update-environment.md#t-create-bucket)
  + [Create environment](t-create-update-environment.md#troubleshooting-create-environment)
    + [I tried to create an environment and it's stuck in the `Creating` state](t-create-update-environment.md#t-stuck-failure)
    + [I tried to create an environment but it displays the status as `Create failed`](t-create-update-environment.md#t-create-environ-failed)
    + [I tried to select a VPC and received a `Network Failure` error](t-create-update-environment.md#t-network-failure)
    + [I tried to create an environment and received a service, partition, or resource "must be passed" error](t-create-update-environment.md#t-service-partition)
    + [I tried to create an environment and it displays the status as `Available` but when I try to access the Airflow UI an `Empty Reply from Server` or `502 Bad Gateway` error is shown](t-create-update-environment.md#t-create-environ-empty-reply)
    + [I tried to create an environment and my user name is a bunch of random character names](t-create-update-environment.md#t-create-environ-random-un)
  + [Update environment](t-create-update-environment.md#troubleshooting-update-environment)
    + [I tried changing the environment class but the update failed](t-create-update-environment.md#t-rollback-billing-failure)
  + [Access environment](t-create-update-environment.md#troubleshooting-access-environment)
    + [I can't access the Apache Airflow UI](t-create-update-environment.md#t-no-access-airflow-ui)
+ [Troubleshooting: CloudWatch Logs and CloudTrail errors](t-cloudwatch-cloudtrail-logs.md)
  + [Logs](t-cloudwatch-cloudtrail-logs.md#troubleshooting-view-logs)
    + [I can't find my task logs, or I received a `Reading remote log from Cloudwatch log_group` error](t-cloudwatch-cloudtrail-logs.md#t-task-logs)
    + [Tasks are failing without any logs](t-cloudwatch-cloudtrail-logs.md#t-task-failing-no-logs)
    + [I get a `ResourceAlreadyExistsException` error in CloudTrail](t-cloudwatch-cloudtrail-logs.md#t-cloudtrail)
    + [I get an `Invalid request` error in CloudTrail](t-cloudwatch-cloudtrail-logs.md#t-cloudtrail-bucket)
    + [I get `Cannot locate a 64-bit Oracle Client library: "libclntsh.so: cannot open shared object file: No such file or directory` in Apache Airflow logs](t-cloudwatch-cloudtrail-logs.md#t-plugins-logs)
    + [I get psycopg2 'server closed the connection unexpectedly' in my scheduler logs](t-cloudwatch-cloudtrail-logs.md#scheduler-postgres-library)
    + [I get `Executor reports task instance %s finished (%s) although the task says its %s` in my DAG processing logs](t-cloudwatch-cloudtrail-logs.md#long-running-tasks)
    + [I get `Could not read remote logs from log_group: airflow-*{*environmentName}-Task log_stream:* {*DAG_ID}/*{*TASK_ID}/*{*time}/*{*n}.log.` in my task logs](t-cloudwatch-cloudtrail-logs.md#t-task-fail-permission)