When I try to open Gantter, the following error screen appears and I am unable to view it.

Another person can open the same Gantter page.

The field AccessToken must be a string or array type with a maximum length of ‘250’.

I think the error is that the number of characters in the AccessToken exceeds 250, but I don't know what to do.

For some reason, it now appears and I have solved the problem.

It occurred again.

How can I avoid this?