I've got an app in which the layers do not always appear. I can use the identify tool to select them when they are invisible, so I know they are there, but they fail to draw about 50% of the time.
Developer console shows
"Uncaught (in promise) Error: A listener indicated an asynchronous response by returning true, but he message channel closed before a response was received"
"[warning]: Error fetching legend information: RequestTimeoutError: Timeout exceeded" in loader.js:470
How can solve this?
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