I'm developing a very simple Angular 2 application with only one component, one service and one interface but I came across this error and after a few hours of investigating I still can't find an answer.
Uncaught TypeError: Cannot read property 'apply' of undefined
at XMLHttpRequest.desc.get [as ontimeout] (zone.js:1265)
at XHRLocalObject.AbstractXHRObject._cleanup (abstract-xhr.js:149)
at XMLHttpRequest.xhr.onreadystatechange (abstract-xhr.js:125)
at XMLHttpRequest.wrapFn (zone.js:1230)
at ZoneDelegate.invokeTask (zone.js:398)
at Zone.runTask (zone.js:165)
at XMLHttpRequest.ZoneTask.invoke (zone.js:460)
I can't really understand why the error is keeps appearing, the application is still functional after the mistake appears but it's frustrating.
Any ideas?
Hi I had the same problem and I solve this downgrading to zone.js@0.8.5 and the problem disappeared. Run the following command in your project folder:
npm install zone.js@0.8.5 --save
for now you could do something like:
rimraf node_modules
npm cache clear
npm i zone.js@0.8.5
I don't know if it can help others, but in my case it was because i was adding a mouseover listener and the function of the mouseover event wasn't defined. Took me a while to find out
b.addListener("mouseover",this.onMouseOver); //this.onMouseOver wasn't defined