# Problems I experienced when running the LC

## Video

* On the "sum up" slides for point 4 is says "In the URL bar type https://localhost:5001". It must be http without the s

## raiden-cli

* Invalid CLI parameters get silently ignored. This makes it very easy to run into a problem due to not noticing that a parameter is ignored.
* When I use https://npm.io/package/@raiden_network/raiden-cli/v/3.0.1 (as in the video), the webui fails when calling `/rpc` with the following exception:

  InternalServerError: Cannot read properties of undefined (reading 'connection')                                                                                                                                                                               
    at Object.internalErrorHandler (/home/karl/.config/yarn/global/node_modules/@raiden_network/raiden-cli/build/app.js:20:36)
    at Layer.handle_error (/home/karl/.config/yarn/global/node_modules/express/lib/router/layer.js:71:5)
    at trim_prefix (/home/karl/.config/yarn/global/node_modules/express/lib/router/index.js:326:13)
    at /home/karl/.config/yarn/global/node_modules/express/lib/router/index.js:286:9
    at Function.process_params (/home/karl/.config/yarn/global/node_modules/express/lib/router/index.js:346:12)
    at next (/home/karl/.config/yarn/global/node_modules/express/lib/router/index.js:280:10)
    at Layer.handle_error (/home/karl/.config/yarn/global/node_modules/express/lib/router/layer.js:67:12)
    at trim_prefix (/home/karl/.config/yarn/global/node_modules/express/lib/router/index.js:326:13)
    at /home/karl/.config/yarn/global/node_modules/express/lib/router/index.js:286:9
    at Function.process_params (/home/karl/.config/yarn/global/node_modules/express/lib/router/index.js:346:12)

When using https://github.com/raiden-network/light-client/pull/3132, it works for me.
* Fletcher does not get this problem, but a different one which I can't reproduce.
* There is no check if the content of the data dir matches the current chain. Switching the eth-rpc setting to a different chain and forgetting to change the data dir will cause problems, I assume.

## Raiden dApp
* Temporary problem: No error message when working on the wrong chain (generic message "log in the console for details" in the UI, no message in console, empty log). On Thore's recommandation, I added console.log statements to
* https://github.com/raiden-network/light-client/blob/bb6366c17a2f45adc729150f439799e5c0a07460/raiden-dapp/src/services/raiden-service.ts#L110 and
* https://github.com/raiden-network/light-client/blob/e8d0f259d6c20763e43186ef8ce49d81c6ef2d25/raiden-dapp/src/components/ConnectionManager.vue#L206

which made the error visible in the console.
I can't reproduce this problem, anymore. I don't know why the behavior changed.
* The latest deployments seem to be missing, see https://github.com/raiden-network/team/issues/1118#issuecomment-1164430105

## Raiden web-ui on light client
* See also https://github.com/raiden-network/light-client/pull/3132#pullrequestreview-1016786949