POST http://cl12345.xxx.com:8080/ords/wwv_flow.ajax net : : ERR_CONNECTION_RESET

Application Express 18.1.0.00.45

Whenever I try to update a query in one of the page's classic report, I see this error in the developer tools.

Whatever changes I make , when clicked on Save, system gives me a confirmation that it saved.

But the actual classic report definition region indicates that it did not save.

This is also confirmed when we exit the developer , because it says that the changes are not saved and may be lost.

You click on Leave, when you revisit the page, you won't find the changes that you had done previously (obviously )

I had this issue few months back and on increasing the size of temporary memory by system administrator, it got resolved. However, I see the same issue on a different page. With the same temporary memory size that worked before, it won't work on this page now.