no issue
When switching the oembed service to async/await the error handling was not correctly refactored. `this.errorHandler(url)` was returning a curried function so it could be used as `.catch(this.errorHandler(url))` but that's not how it's being used after the async/await change meaning we were returning a function rather than the result of that function.
- `this.errorHandler(url)` is now only used in one place where `url` is available so removed the method and moved the body of the curried function inline into the `catch` handler
- added a message to the logged error so it's more clear what the log refers to
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