Open Bug 1507533 Opened 6 years ago Updated 2 years ago

console.error: "Error while calling actor 'accessiblewalker's method 'children'" "accessible is null; can't access its \"getState\" property"

Categories

(DevTools :: Accessibility Tools, enhancement)

Product:
DevTools
Component:
Accessibility Tools
Type:
enhancement

Tracking

(Not tracked)

People

(Reporter: yzen, Unassigned)

Details

We need to check if accessible object is null either inside isStale or before it is called.
Summary: JavaScript error: chrome://global/content/bindings/browser.xml, line 1060: uncaught exception: 2147500033 → console.error: "Error while calling actor 'accessiblewalker's method 'children'" "accessible is null; can't access its \"getState\" property"
Better stack:

console.error: "isStale@resource://devtools/server/actors/accessibility/walker.js:123:3\ngetDocument@resource://devtools/server/actors/accessibility/walker.js:313:9\nchildren@resource://devtools/server/actors/accessibility/walker.js:290:42\nasync*handler@resource://devtools/shared/protocol.js:1198:21\nonPacket@resource://devtools/server/main.js:1324:15\nreceiveMessage@resource://devtools/shared/transport/child-transport.js:66:5\nMessageListener.receiveMessage*_addListener@resource://devtools/shared/transport/child-transport.js:40:5\nready@resource://devtools/shared/transport/child-transport.js:57:5\n_onConnection@resource://devtools/server/main.js:888:5\nconnectToParent@resource://devtools/server/main.js:309:12\nonConnect</<@resource://devtools/server/startup/frame.js:50:22\nonConnect<@resource://devtools/server/startup/frame.js:49:7\nexports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:109:14\nMessageListener.receiveMessage*@resource://devtools/server/startup/frame.js:72:5\n@resource://devtools/server/startup/frame.js:19:4\n"
Severity: normal → S3
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