🚨 Error: Assertion failed

Details
---
**Error report:** [link](http://go/ampe/CL2_z_j99M66Vw)
**First seen:** Mar 4, 2021
**Frequency:** ~ 1,104/day

Stacktrace
---

Error: Assertion failed

    at message (src/core/assert.js:92:29)

    at Error (src/core/assert.js:180:4)

    at parentResource (src/service/owners-impl.js:118:16)

    at element (src/service/owners-impl.js:117:22)

    at findResourcesInElements_ (src/service/owners-impl.js:165:4)

    at scheduleLayoutOrPreloadForSubresources_ (src/service/owners-impl.js:63:4)

    at extensions/amp-consent/0.1/consent-ui.js:383:8

    at extensions/amp-consent/0.1/amp-consent.js:178:6

    at src/custom-element.js:1493:8

    at src/service/resource.js:1109:4

    at r (src/service/resources-impl.js:1832:37)

    at r (src/service/resources-impl.js:1832:31)

    at callback (src/finite-state-machine.js:72:6)

    at src/service/resources-impl.js:748:42

    at src/service/resources-impl.js:136:42

    at src/pass.js:109:4

    at src/pass.js:55:6

    at callback (src/service/timer-impl.js:79:10)

Notes
---
`@rcebulko` modified `src/core/assert.js:92-93` in [#32887](https://github.com/ampproject/amphtml/pull/32887) (Feb 25, 2021)
`@rcebulko` modified `src/core/assert.js:99-193` in [#32788](https://github.com/ampproject/amphtml/pull/32788) (Feb 23, 2021)
`@lannka` modified `src/service/owners-impl.js:118-155` in [#24222](https://github.com/ampproject/amphtml/pull/24222) (Aug 30, 2019)
`@renovate-bot` modified `src/service/owners-impl.js:117-117` in [#27350](https://github.com/ampproject/amphtml/pull/27350) (Mar 30, 2020)
`@renovate-bot` modified `src/service/owners-impl.js:165-165` in [#27350](https://github.com/ampproject/amphtml/pull/27350) (Mar 30, 2020)
`@powerivq` modified `src/service/owners-impl.js:44-74` in [#23668](https://github.com/ampproject/amphtml/pull/23668) (Aug 26, 2019)
`@dvoytenko` modified `extensions/amp-consent/0.1/consent-ui.js:366-392` in [#32480](https://github.com/ampproject/amphtml/pull/32480) (Feb 8, 2021)
`@dvoytenko` modified `extensions/amp-consent/0.1/amp-consent.js:168-181` in [#32480](https://github.com/ampproject/amphtml/pull/32480) (Feb 8, 2021)
`@dvoytenko` modified `src/custom-element.js:1493-1493` in [#32345](https://github.com/ampproject/amphtml/pull/32345) (Feb 4, 2021)
`@dvoytenko` modified `src/service/resource.js:1105-1118` in [#3544](https://github.com/ampproject/amphtml/pull/3544) (Jun 14, 2016)
`@renovate-bot` modified `src/service/resources-impl.js:1832-1832` in [#27350](https://github.com/ampproject/amphtml/pull/27350) (Mar 30, 2020)
`@renovate-bot` modified `src/service/resources-impl.js:1832-1832` in [#27350](https://github.com/ampproject/amphtml/pull/27350) (Mar 30, 2020)
`@jridgewell` modified `src/finite-state-machine.js:63-78` in [#1637](https://github.com/ampproject/amphtml/pull/1637) (Mar 18, 2016)
`@dvoytenko` modified `src/service/resources-impl.js:748-748` in [#24566](https://github.com/ampproject/amphtml/pull/24566) (Sep 20, 2019)
`@jridgewell` modified `src/service/resources-impl.js:136-136` in [#9789](https://github.com/ampproject/amphtml/pull/9789) (Jun 8, 2017)
`@jridgewell` modified `src/pass.js:105-112` in [#3513](https://github.com/ampproject/amphtml/pull/3513) (Jun 9, 2016)
`@rsimha` modified `src/pass.js:50-56` in [#23559](https://github.com/ampproject/amphtml/pull/23559) (Jul 29, 2019)
`@rsimha` modified `src/service/timer-impl.js:73-81` in [#21212](https://github.com/ampproject/amphtml/pull/21212) (May 16, 2019)

**Seen in:**
- 03-04 Nightly (0444)

**Possible assignees:** `@rcebulko`, `@dvoytenko`

/cc @ampproject/release-on-duty