Apex 5.0 Page Designer JSON error on the page to load an application of 4.2 imported

After you import our application written with version 4.2 (issue 26, modified) at APEX 5.2 when I try to open a page with the page designer, I get the following message

Error: parsererror - SyntaxError: JSON.parse: unexpected end of data to column 1 of line 1 of the JSON data

and the Page displays a ' no page or page no model has "no region free items or processes.

Strangely in sqldeveloper, I can see that all the pages have the right number of elements and the application can run without problem.

We use a lot of plugins and many models updated the theme 26.

I try to delete all pages in the application and create a new one, but without success.

Our application contains hundreds of pages, and I'm afraid that we must stay on the 4.2 version!

Thanks in advance.

user_frederic wrote:

After you import our application written with version 4.2 (issue 26, modified) at APEX 5.2 when I try to open a page with the page designer, I get the following message

Error: parsererror - SyntaxError: JSON.parse: unexpected end of data to column 1 of line 1 of the JSON data

and the Page displays a ' no page or page no model has "no region free items or processes.

Strangely in sqldeveloper, I can see that all the pages have the right number of elements and the application can run without problem.

We use a lot of plugins and many models updated the theme 26.

I try to delete all pages in the application and create a new one, but without success.

Our application contains hundreds of pages, and I'm afraid that we must stay on the 4.2 version!

Can you switch off Page Designer and page definitions into component?

Run the utility Advisor to find anomalies in the application.

Tags: Database

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