When I use the ZOOM function, I report an error and ask for a solution

Gantt
#1

image

When I use the ZOOM function, I report an error and ask for a solution

#2

Hello Jinhua,
Unfortunately, I couldn’t reproduce the issue in the following snippet:
https://snippet.dhtmlx.com/5/610f65e83
Probably, it is related to Gantt configuration, but it is hard to suggest what might be wrong as I don’t see your code.

Please, reproduce the issue in the snippet, then click on the “Share” button and send me the link:
https://snippet.dhtmlx.com/38ee1b370
Or send me an HTML file with all the necessary Javascript and CSS files.