Dcat.wait is not a function

The error message "Dcat.wait is not a function" indicates that the function "wait" is not defined in the Dcat object. This could be due to a few reasons:

1. The "wait" function was never defined or imported in the code.
2. The function was defined or imported incorrectly.
3. There is a typo in the function name.

To resolve this issue, you should check that the "wait" function is properly defined or imported in your code, and that there are no typos in the function name. If the function is defined in a separate file, make sure that it is properly imported into the file where you are calling it.