DropZone component upload error "TypeError: Cannot convert undefined or null to object"

UI Builder
1

I am using DropZone component. It was working for a short while, but now is issuing error (listed in title of this ticket) on ALL documents dropped into component. These document types (jpg, png, pdf) can be opened successfully and without error using other facilities outside of backendless. The image below is created by tracing I installed into the OnChange event.

image
image811×85 4.41 KB

Could the problem be related to the portion of the “files” data item that I have circled?

2

Hello @Richard_Munger

We will be happy to assist you. I need to ask you a few more questions so I can understand the problem better.

Please provide your applicationId, container name and page name.

Regards,
Volodymyr

3

app id = DEC6B808-645B-7B62-FF97-8D7C3B617700
container = default
page = lpBILL

4

Hello, @Richard_Munger

It seems like the issue is with the On Upload Event logic, specifically in the following block:

image

Try to print selectedCatList before this block, it looks like you’re getting undefined from AppData.

Regards,
Serhiy

5

Thank you. I had missed that I had failed to initialize a numeric variable prior to first use.