Unexpected result from Pantheon API when attempting to PURGE edge cache.

We could reproduce it while creating media entities via a bulk upload form, also during migrations.

Actually the try-catch is already there, it merely generates a watchdog entry.

I noticed a couple of these errors for the first time recently. Both happened on the /node/add page when adding a media image via the Media Library. That's as much as I can tell by the request I'm seeing in the Sentry log. (I am not the operator who triggered the error.) Hope it helps?

https://****.pantheonsite.io/media-library?_wrapper_format=drupal_ajax&ajax_form=1&hash=Nbm-cFY3Tcr3AWclhJLnDlMNHvqurAyjepVDfV5DL0g&media_library_allowed_types%5Bimage%5D=image&media_library_opener_id=media_library.opener.field_widget&media_library_opener_parameters%5Bfield_widget_id%5D=field_common_image&media_library_opener_parameters%5Bentity_type_id%5D=node&media_library_opener_parameters%5Bbundle%5D=page&media_library_opener_parameters%5Bfield_name%5D=field_common_image&media_library_remaining=1&media_library_selected_type=image

Same error as @capellic, and the image is not uploaded:
Error in the web console:

Uncaught 
Object { message: "\nAn AJAX HTTP error occurred.\nHTTP Result Code: 502\nDebugging information follows.\nPath: /media-library?media_library_opener_id=media_library.opener.field_widget&media_library_allowed_types%5Bimage%5D=image&media_library_selected_type=image&media_library_remaining=1&media_library_opener_parameters%5Bfield_widget_id%5D=field_hero_image&media_library_opener_parameters%5Bentity_type_id%5D=node&media_library_opener_parameters%5Bbundle%5D=sa_page&media_library_opener_parameters%5Bfield_name%5D=field_hero_image&hash=jrK_s5Wk_R-TSA8Z6nyGlWOTb6t1498NWPfvPCMHe_E&ajax_form=1\nStatusText: error\nResponseText: \r\n502 Bad Gateway\r\n502 Bad Gateway\r\nnginx\r\n", name: "AjaxError", stack: "@https://***.pantheonsite.io/core/misc/ajax.js?v=11.1.7:196:32\n@https://***.pantheonsite.io/core/misc/ajax.js?v=11.1.7:1926:3\n" }
​
message: "\nAn AJAX HTTP error occurred.\nHTTP Result Code: 502\nDebugging information follows.\nPath: /media-library?media_library_opener_id=media_library.opener.field_widget&media_library_allowed_types%5Bimage%5D=image&media_library_selected_type=image&media_library_remaining=1&media_library_opener_parameters%5Bfield_widget_id%5D=field_hero_image&media_library_opener_parameters%5Bentity_type_id%5D=node&media_library_opener_parameters%5Bbundle%5D=sa_page&media_library_opener_parameters%5Bfield_name%5D=field_hero_image&hash=jrK_s5Wk_R-TSA8Z6nyGlWOTb6t1498NWPfvPCMHe_E&ajax_form=1\nStatusText: error\nResponseText: \r\n502 Bad Gateway\r\n502 Bad Gateway\r\nnginx\r\n"
​
name: "AjaxError"
​
stack: "@https://***.pantheonsite.io/core/misc/ajax.js?v=11.1.7:196:32\n@https://***.pantheonsite.io/core/misc/ajax.js?v=11.1.7:1926:3\n"
​
<prototype>: Error: 
ajax.js:196:32

Just a quick note to say that our team is seeing the same errors as https://www.drupal.org/project/pantheon_advanced_page_cache/issues/29272... 🐛 Unexpected result from Pantheon API when attempting to PURGE edge cache. Active . We are on D10.4.