When user tries to create new rediect, where source path is in form "node/xxxx" where xxxx is non existing node's nid I'm getting "Oops, something went wrong. Check your browser's developer console for more details. " error.
The stack track of browser console:
message: '\nAn AJAX HTTP error occurred.\nHTTP Result Code: 404\nDebugging information follows.\nPath: https://en.redacted.docker.localhost/admin/config/search/redirect/add?ajax_form=1\nStatusText: error\nResponseText: {"message":"The \\u0022node\\u0022 parameter was not converted for the path \\u0022\\/node\\/{node}\\u0022 (route name: \\u0022entity.node.canonical\\u0022)"}'
ā
name: "AjaxError"
ā
stack: "@https://en.redacted.docker.localhost/core/misc/ajax.js?v=10.1.8:196:32\n@https://en.REDACTED.docker.localhost/core/misc/ajax.js?v=10.1.8:1889:3\n"1. As a administrator, visit admin/config/search/redirect/add
2. Then put phony source (eg. node/12345678)
3. key TAB (change focus on field)
4. Then error appear.
I assume that there should be no warning here or it should be not that confusing.
Needs review
1.9
Code
Updated the condition to check if the path is valid using path.validator service and then proceed. If the path is invalid show "not a valid path" message. Moving it for ahead for Review.