epic power up does not work any more on one board

[Josef Etz]

Hi,

we are using the epic power up since many months.

yesterday it stopped working.

when clicking 'add to epic' the drop down stays completely empty. In the java-scipt console I see the following:

index.js:1 you are using a legacy api key "e2b***********28c7", please re-authorize the power-up
jquery.js:5508 Error while parsing the 'sandbox' attribute: 'allow-storage-access-by-user-activation' is an invalid sandbox flag.

background:
- it's working on other boards

- we have a story-board that references epics on a (different) epics board.

Does anybody have any idea?

[Josef Etz]

I solved the issue back then, by archiving some epics.

[Stanzilla]

Same here but with other power ups:

Error while parsing the 'sandbox' attribute: 'allow-storage-access-by-user-activation' is an invalid sandbox flag.
(anonymous) @ iframe-io.coffee:46
15:34:03.466

Error, timeout while initializing index iframe for https://app.butlerfortrello.com/master-223/powerup-loader.html. Timeout=20000ms

Error, timeout while initializing index iframe for https://slack.trello.services/index.html?ver=a9ce1995d1b5. Timeout=20000ms