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shuvokarc0001
June 27, 2025
Question

GridPlus Error

  • June 27, 2025
  • 3 replies
  • 0 views

Hi All,

I am getting the below error at the bottom of interface canvas when configuring the GridPlus component. I am on Appian version 25.2.

Error: SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON

Use case: An user input grid where user can copy and paste large data set from excel 

I have followed the documentation and all the expression rules(queryRuleName, columnConfigs) are working individually. Any guidance will be appreciated. 

3 replies

stefanhelzle0001
stefanhelzle0001
June 28, 2025

I suggest to open a support case. This is an Appian provided plugin. They know the internals best.

M
marcom0706
July 10, 2025

Hi shuvokarc0001,

how you configure the grid, can i see it?

johnnya2735
johnnya2735
October 9, 2025

This is an issue with your browser's third-party cookie settings. If the page connects to an external URL (e.g. an API endpoint, a CDN) and connect-src is not explicitly set, the browser will check default-src. If that's set to 'self' and the external URL doesn't match, the browser will block the connection and display the error.

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