Just some ideas from a ctrlX user which maybe could be useful? The flows are located in the configuration file. I would try to: deactivate the node red app -> save the configuration -> open the zip file -> delete or modify the flow/s in the node-red folder which causes the problem -> load and activate the configuration again -> enable node red app -> start node red. Or, if there is nothing in the configuration that is worth saving just create and activate a new configuration then all flows and node modules, which are installed separatly, are deleted. Be aware of that all other settings are also reseted, not only node red, if more are in use.
... View more