I use element 2.12.0, the latest version, but when I use: row key = "getrowkeys": expand row keys = "expands", I will prompt typeerror: cannot read property 'reduce' of null, and the page will not be displayed. Has anyone encountered this problem?
I also encountered this problem today, but my solution is not to write the data initialized in data as null. For example, an error will be reported below
But if you change it to the following, you won't make a mistake...