You are using an older version of AG Grid. To upgrade, please see the
migration guide.
Full Error Text
Full error message cannot be shown because there are missing parameters in the URL. Please
follow the full link from the developer tool logs.
you cannot mix groupDisplayType = "multipleColumns" with treeData, only one column can be used to display groups when doing tree data
To show this error text in the dev console, import the ValidationModule.
Related Doc Pages
The following documentation pages should provide additional context / guidance on how to
resolve this error.