zackmeso opened a new pull request #4114: AIRFLOW-3259] Fix internal server error when displaying charts URL: https://github.com/apache/incubator-airflow/pull/4114 This is caused by the fact that the function 'sort' is no longer a part of Dataframe in pandas and is still used in the code base. It has ever since been replaced by 'sort_values'. Replacing the function gets the chart display back to its normal behaviour. Make sure you have checked _all_ steps below. ### Jira - [x] My PR addresses the following [Airflow Jira](https://issues.apache.org/jira/browse/AIRFLOW-3259/) issues and references them in the PR title. For example, "\[AIRFLOW-XXX\] My Airflow PR" - https://issues.apache.org/jira/browse/AIRFLOW-XXX - In case you are fixing a typo in the documentation you can prepend your commit with \[AIRFLOW-XXX\], code changes always need a Jira issue. ### Description - [x] Here are some details about my PR, including screenshots of any UI changes: **Problem** When you try to create a chart and display metrics you get an internal server error. **Cause** A dependency issue: the function "sort" was deprecated and is no longer a part of pandas Dataframe and thus it creates a problem when creating charts in airflow. **Solution** The sort function needs to replaced by sort_values instead (See code below) `# Replace this ` `df = df.sort(df.columns[0]) ` `# By this ` `df = df.sort_values(by=df.columns[0])` In views.py **Result** The data is loaded and the chart displayed ### Tests - [x] My PR does not need testing for this extremely good reason: My code doesn't change the behavior of the code, but rather modifies a no longer existing function (in pandas) with its new substitute. ### Commits - [x] My commit all reference Jira issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)": 1. Subject is separated from body by a blank line 1. Subject is limited to 50 characters (not including Jira issue reference) 1. Subject does not end with a period 1. Subject uses the imperative mood ("add", not "adding") 1. Body wraps at 72 characters 1. Body explains "what" and "why", not "how" ### Code Quality - [x] Passes `flake8`
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