weird error while launching any game

getting this strange error suddenly when trying to launch any game:

(20:41:36) [ERROR]: [Backend]: TypeError: Use delete() to clear values
at ElectronStore.set (/opt/Heroic/resources/app.asar/node_modules/conf/dist/source/index.js:165:19)
at Ae.set (/opt/Heroic/resources/app.asar/build/main/main.js:7:10790)
at Ls (/opt/Heroic/resources/app.asar/build/main/main.js:12:5431)
at processTicksAndRejections (node:internal/process/task_queues:105:5)
at Module.xu [as launch] (/opt/Heroic/resources/app.asar/build/main/main.js💯7592)
at No (/opt/Heroic/resources/app.asar/build/main/main.js:128:1469)
at Session.<anonymous> (node:electron/js2c/browser_init:2:106823)

was working fine a few hours ago. known bug or is my local config just borked?

UPDATE:

ticking "disable UMU" in Advanced fixed it
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