Node Red broken: TypeError: Cannot read properties of undefined (reading 'screenName')

[DangerTimsen]

After installing the node-red-contrib-pixelit and using it - Node-Red completely broke down and will not boot again.
I copied the first "Weather" flow from this forum and added Playlist Update -> Core. After deploy this:

26 Feb 19:18:51 - [error] TypeError: Cannot read properties of undefined (reading 'screenName')
at core._inputCallback (/config/node-red/node_modules/node-red-contrib-pixelit/pixelit/core.js:107:36)
at /opt/node_modules/@node-red/runtime/lib/nodes/Node.js:210:26
at Object.trigger (/opt/node_modules/@node-red/util/lib/hooks.js:166:13)
at core.Node._emitInput (/opt/node_modules/@node-red/runtime/lib/nodes/Node.js:202:11)
at core.Node.emit (/opt/node_modules/@node-red/runtime/lib/nodes/Node.js:186:25)
at core.Node.receive (/opt/node_modules/@node-red/runtime/lib/nodes/Node.js:485:10)
at Immediate. (/opt/node_modules/@node-red/runtime/lib/flows/Flow.js:831:52)
at processImmediate (node:internal/timers:476:21)

WTF? Can anybody point me to solving and/or reasons for this?