Client error when defining Action trend

[alex-ketch]

Describe the bug
Attempting to define 'Action trends' on a new account results in errors, making it impossible(?) to create reports.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Trends' view
2. See error in console
3. Add an action filter
4. No data graph is presented

Expected behavior

1. Go to 'Trends' view
2. Add an action filter
3. See a graph of the results

Screenshots

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Desktop (please complete the following information):

• OS: macOS 10.15.3
• Browser: Safari
• Version: 13.0.5

Additional context

This is on the hosted PostHog instance.

Seems to be due to directly accessing the id the last actions.results item when the results list is empty (line 51).
Not familiar enough with the project to say whether that's a client or backend issue though.

posthog/frontend/src/scenes/trends/ActionsGraph.js

Lines 46 to 56 in 1522c37

	fetchActions() {
	api.get('api/action').then(actions => {
	if (!this.state.filters.actions)
	this.setFilters({
	actions: [
	{ id: actions.results[actions.results.length - 1].id },
	],
	})
	this.setState({ actions: actions.results })
	})
	}

[timgl]

@alex-ketch Thanks Alex, that is fixed. The reason for this is we normally load in some example actions, but that didn't happen with your account (due to the same issue that caused your token not to be set).

Once you create an action, you should be on your way!