API Validation - should match against

I got the following error validating my API:

Validation failed. /components/schemas/WebhookPayload<WebhookQuoteCarriersQualified> has an invalid name. Component names should match against: /^[a-zA-Z0-9.-_]+$/

The thing is, it does match. I tried this on regex101.com and it matches for every "flavor" that they offer: PCRE, PCRE2, ECMAScript, Python, Golang, Java 8, and .NET. My best guess is that it doesn't like the <> characters, but again, the regex produces a match. What's going on here?