Adding new modules leads to irreversible error

Mykle1

@rudibarani said in Adding new modules leads to irreversible error:

I am sure these would generally run fine and the problem must be rooted somewhere else.

I am sure of that, too. However, it is impossible to know how each person’s Pi is setup. I/we are working on the assumption that yours was done correctly. This is why 2 of us have asked for you to post your config.js here so that we could eliminate that as a possibility. So far, you haven’t done so. Basically, you’re telling us you’ve done everything correctly and then asking us why it’s not working.

All together, it seems to me that MM screens the modules folder independent of the config.js file and throws the error. Is that possible?

No, I don’t think so. MM is looking at your config.js file first, to see what modules to load. It wouldn’t throw an error for a module that it isn’t being asked to load

Are there any other things I could check like correct versions of software MM depends on?

Some modules require dependencies, as does MM itself. These should have been done during installation of both. I would make sure you have the latest node (which you seem to already have) and npm.

The only software I noticed during install was node which is version v6.10.3 and thus newer than the 5.xx.xx version described as necessary.

What is needed, if you still require help, is for you to post your config.js, your terminal output (which may be showing errors), and your console output from your dev tools.

cowboysdude

@rudibarani said in Adding new modules leads to irreversible error:

My new additions last evening where:

MMM-Traffic
MMM-TrafficCal
MMM-MyWeather
MMM-Wunderground

Well that tells me either you didn’t install them correctly or they are not in the config.js properly. This is not MM’s fault. IF it was working before you added them then something within those additions is incorrect. SO take them ALL out of your config.js file and see if MM runs. IF it does then enter them ONE at a time and restart your mirror to ensure that there is no problem.

If you don’t want to do that or post your config file then really there isn’t much anyone can do to help you. It’s like doing surgery in the dark…

Simply adding modules then blaming MM isn’t really solving anything. It’s user error and that’s the easiest way I can put it. Again, if you want help please listen and read what people are asking you to do they are trying to help. If you’re not willing to do that I’m afraid there is little anyone can do to help.

People that are here donating their time to further a project … but they cannot spend hours trying to guess at what the problem is. SO they ask for things to better help you.

rudibarani

Thanks everyone. I have a freshly installed Raspbian with Jessie, made sure NodeJS is up to date and installed MM2. That workes fine (except for one cosmetic error message from a bash script I describe in another post). This error only occurs when installing MM2 via the one-line-installer promoted on the website. The problem I describe occurred independent of the way I install MM2z

MM2 runs fine with the sample config.js and throws the error I describe sometimes, but not always, when adding new modules. This happens without touching the standard config.js that came with MM as sample. It even happens during several rounds of completely deleting the MagicMirror-Folder and re-installing MM2 from
scratch.

That’s why I think the problem is independent of my or any config.js file. As you all imply that adding new modules should not change a thing unless I refer to them in the config.js, something else must be wrong.

As the problem persists after several re-installations of MM2, it must be based either within it, as an unknown bug, or somewhere in the dependencies outside the application.

Next, I will completely wipe my SD card and reinstall Raspbian to see if that helps…

cowboysdude

@rudibarani IF the mirror runs fine the error is of no concern. They know it’s there but it hasn’t been a problem.

Good luck.

rudibarani

Hi everyone,
thanks for your help and feedback. I have completely wiped my system and started again from scratch. This time, I can add modules without any errors. This indicates, that there likely was a problem with the framework nodejs and or MM2 depended on.

There is one noticeable difference: When I am connected using SSH, I can only start the Mirror using

node serveronly

The command I used up to now

DISPLAY=:0 npm start

does not work any more.
Is this intended behaviour?

jfisher446

I also started having this issue. To be more precise, attempting to load any module which utilizes a node_helper results in the same error.
I then realized that I’d mistakenly deleted the MagicMirror/modules/node_modules/ folder (thinking that I’d somehow put it there by mistake.

To resolve: try to put node_modules back, along with the node_helper folder within it.

Mykle1

@jfisher446 said in Adding new modules leads to irreversible error:

To resolve: try to put node_modules back, along with the node_helper folder within it.

To accomplish this you can run npm install in the MagicMirror directory.

EDIT

I just realized that you responded to a one year old post. :-)

jfisher446

Top Google results ftw :)
Your suggestion would have been helpful to know though. Thanks for the info!