MM Error - .AppleDouble and UnhandledPromiseRejectionWarning

[bolish]

@lavolp3

Here is the list of the modules I’m using :

It’s a lot…So it seems difficult to identify the one causing the issue, don’t you think so? Maybe you know an analysis method that could help?

Do you think that by “disabled : true” then one by one, it could work to identify which one is causing the issue?

Regards

[lavolp3]

@bolish Well at first I would rule out:

MMM-Wunderlist
MMM-remote-control
MMM-SystemStats
calendar_monthly
all in default

I have these as well and not the message you’re finding.
What you could try out:
There is a module MMM-Logging by @shbatm giving the logging output more detail. It’s easy to install and you don’t need to configure anything.
That module could be able to show where the unhandled promise reection is sitting.

[bolish]

@lavolp3
OK I will give it a try this weekend and check the logs.
Disabling them on by one (through the config.js) will not help?

[lavolp3]

@bolish It will but it’s more work :-) That would be my next approach

[bolish]

@lavolp3
Done…I can indeed see strange things…

2019-02-15T22:45:59 <log> Launching application. (/home/pi/MagicMirror/js/electron.js:82 App.<anonymous>)
2019-02-15T22:45:59 <error> ERROR! Could not find main module js file for .AppleDouble (/home/pi/MagicMirror/modules/MMM-Remote-Control/node_helper.js:258 Class.loadModuleDefaultConfig)
2019-02-15T22:46:03 <error> (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03 <error> (node:6793) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03 <error> (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03 <error> (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 3): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03 <error> (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 4): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:04 <error> (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 5): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:08 <info> MMM-Logging updated config received, reloading console (/home/pi/MagicMirror/modules/MMM-Logging/node_helper.js:30 Class.socketNotificationReceived)

What do you think?

Regards

[lavolp3]

@bolish
OK that didn’t help.
MMM-Logging at least gave us the file putting the error out but not file from which it originated.

But isn’t Linux a beautiful wild monsterous creature?
Try this command

find . -maxdepth 2 -exec grep -nwl  Promise 2>/dev/null {} +

in the MagicMirror directory.

“find” looks for all files in the 3rd party module directories (all files with depth of 2 directories maximum, we don’t want to have all the numerous node module files included), then it executes (“-exec”) a grep function searching the files for the “Promise” function.
“2>/dev/null” is there to put all error output (there’s a lot) away from the standard output

This will give you all 3rd party module files including the promise function. Then we can limit it to a few modules.

With these you can do the “deactivate and look for errors” workflow and find out the one responsible

[bolish]

@lavolp3
this is the result I have :

./js/main.js
./js/module.js
./clientonly/index.js

Seems to be linked to the core system itself only and not to any particular module?
I’ve already made a git pull for MM itself but it’s already up to date.

[lavolp3]

@bolish Sorry my bad. You need to do it in the modules folder. Then maxdepth 2 leads to the folder itself and all 3rd party folders.
Sorry again!

[bolish]

@lavolp3
!!! it’s not your fault, it’s shame on me!!!

Anyway, I just did it…Result is zero…Nothing…

pi@MagicPi:~/MagicMirror/modules $ find . -maxdepth 2 -exec grep -nwl  Promise 2>/dev/null {} +
pi@MagicPi:~/MagicMirror/modules $ 

So…disable them one by one is the next analysis step??

[lavolp3]

@bolish First, try another one

find . -maxdepth 2 -exec grep -nwl  .then 2>/dev/null {} +

Promises are not always processed by a Promise function, but I also by calling something and then calling .then().
Actually I know these bastards for two or three days now, so I’m far from being an expert

[bolish]

@lavolp3
thx

Here is the result

pi@MagicPi:~/MagicMirror/modules $ find . -maxdepth 2 -exec grep -nwl  .then 2>/dev/null {} +
./MMM-Remote-Control/node_helper.js
./MMM-Remote-Control/installer.sh
./MMM-BackgroundSlideshowInfo/README.md
./MMM-NotificationTrigger/README.md
pi@MagicPi:~/MagicMirror/modules $ 

So… Remote Control I believe…
I will try to disable it and see what happens.

[bolish]

I confirm…
No error message anymore after disabling MMM-RemoteControl.

Wao…and now?? Do you have a clue about next step or should I raise an issue into MMM-ControlRemote git?

[lavolp3]

@bolish That’s odd. Something doesn’t add up, sorry. I think a “then” is searched as well. But try these modules.
If not successfull you’d need to go with disabling one module after another

[lavolp3]

@bolish Well, great!! BUt oddly, I dont have this… and I have the module as well.
Do you have Jopyth’s original version installed? Or a fork?

[bolish]

@lavolp3
I have the original version from Jopyth.
S***, I hoped it would have been easier to figure out!!

I just Git Pulled… Was already up to date

[lavolp3]

@bolish OK I can confirm your errors. Had it disabled. By enabling the unhaldled promises come up.
Raise an issue. I’ll have a look at the code

[bolish]

Don’t you think it can be linked to the .appledouble thing. Remember that :

2019-02-15T22:45:59  Launching application. (/home/pi/MagicMirror/js/electron.js:82 App.)
2019-02-15T22:45:59  ERROR! Could not find main module js file for .AppleDouble (/home/pi/MagicMirror/modules/MMM-Remote-Control/node_helper.js:258 Class.loadModuleDefaultConfig)
2019-02-15T22:46:03  (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03  (node:6793) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03  (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03  (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 3): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:03  (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 4): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:04  (node:6793) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 5): TypeError: Cannot read property 'refs' of undefined (/home/pi/MagicMirror/internal/process/warning.js:18 writeOut)
2019-02-15T22:46:08  MMM-Logging updated config received, reloading console (/home/pi/MagicMirror/modules/MMM-Logging/node_helper.js:30 Class.socketNotificationReceived)

Because the .appledouble error is refering to Remote Control also.

So…you just have the same issue now but never noticed it before?

[lavolp3]

@bolish No.
Unhandled promise rejections are code stuff that can be overcome quite easily.

Think of it like this.
You ask your program to do something outside (e.g. request data from somewhere else.
When it doesn’t work the “promise” of delivering something is rejected.
When this rejection is unhandled (the program isnt told what to do) you get this error

[lavolp3]

@bolish said in MM Error - .AppleDouble and UnhandledPromiseRejectionWarning:

So…you just have the same issue now but never noticed it before?

May have been updated in the past. Don’t know.

[bolish]

@lavolp3
Thanks for explanation.

I’ve just raised it on Git on an existing issue log.