# Can't debug app **URL:** \ **Category:** Developers\ **Created:** [January 10, 2021, 6:03pm UTC](https://community.homey.app/t/cant-debug-app/40847 "2021-01-10T18:03:16Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Dactilus](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dactilus/32/29792_2.png) [@Dactilus](https://community.homey.app/u/Dactilus)\ **Post date:** [January 10, 2021, 6:03pm UTC](https://community.homey.app/t/cant-debug-app/40847/1 "2021-01-10T18:03:16Z")
Hi, i am trying to deploy my app to homey from cmd line i am getting error. It was working like 2 months ago and now i can’t deploy properly even blank app created by wizard. When i run app created by wizard and with no modifications, i get error. See log below: c:\Users\Myš\Documents\HomeyApps\com.mys.testapp\>homey app run ✓ Pre-processing app… ✓ Validating app… ✓ Homey App validated successfully against level `debug` ✓ Packing Homey App… ✓ Pruning dev dependencies… × Error occurred during npm prune TypeError: prunePathsJson.removed.map is not a function at Function.getPrunePaths (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\lib\Modules\NpmCommands.js:106:49) at processTicksAndRejections (node:internal/process/task\_queues:93:5) at async C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\lib\App\index.js:696:26 — App size: 25.21 MB ✓ Installing Homey App on `Michal's Homey Pro` ([http://192.168.0.12:80](http://192.168.0.12:80))… ✓ Homey App `com.mys.testapp` successfully installed ✓ Running `com.mys.testapp`, press CTRL+C to quit — Profile your app’s performance at XXX ─────────────── Logging stdout & stderr ─────────────── HERE I GET DUMP OF ENTIRE FILE …\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js and then: TypeError: Cannot read property ‘merge’ of undefined at n.concatBuffers (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:433913) at C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:435180 at n.applyExtensions (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:434365) at C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:435023 at n.flush (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:434136) at n.finish (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:435372) at n.expectHandler (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:434880) at n.add (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:430335) at Socket.c (C:\Users\Myš\AppData\Roaming\npm\node\_modules\homey\node\_modules\athom-api\dist\index.js:1:449063) at Socket.emit (node:events:376:20) at addChunk (node:internal/streams/readable:311:12) at readableAddChunk (node:internal/streams/readable:286:9) at Socket.Readable.push (node:internal/streams/readable:225:10) at TCP.onStreamRead (node:internal/stream\_base\_commons:192:23) and it exit back to commandline. Does someone have an idea, what is wrong? Homey firmware: 5.0.0-rc.50 Thanks, Michal ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [January 10, 2021, 7:09pm UTC](https://community.homey.app/t/cant-debug-app/40847/2 "2021-01-10T19:09:38Z")
There’s a lot going wrong there. For one, it looks like this command is failing: ```auto npm prune --production --dry-run --json ``` Can you run that from your app directory to see what its output is? Also, what is the output of these commands: ```auto npm --version node --version homey --version ``` ---
**Author:** ![Dactilus](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dactilus/32/29792_2.png) [@Dactilus](https://community.homey.app/u/Dactilus)\ **Post date:** [January 11, 2021, 8:35pm UTC](https://community.homey.app/t/cant-debug-app/40847/3 "2021-01-11T20:35:29Z")
This is from console: c:\>npm --version 6.14.10 c:\>node --version v12.20.1 c:\>homey --version 2.9.4 c:\Users\Myš\Documents\HomeyApps\com.mys.testapp\>node app.js c:\Users\Myš\Documents\HomeyApps\com.mys.testapp\> I tryied run that app on my work laptop and it works properly, so i guess my environment on pc is broken or wrong set. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [January 12, 2021, 5:41am UTC](https://community.homey.app/t/cant-debug-app/40847/4 "2021-01-12T05:41:38Z")
> [@Dactilus](#): > > so i guess my environment on pc is broken or wrong set. Yes it sounds like it, although I don’t know where to start looking (I don’t use Windows). Perhaps start by reinstalling Node, npm and `homey`. ---
**Author:** ![Dactilus](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dactilus/32/29792_2.png) [@Dactilus](https://community.homey.app/u/Dactilus)\ **Post date:** [January 13, 2021, 8:12am UTC](https://community.homey.app/t/cant-debug-app/40847/5 "2021-01-13T08:12:35Z")
I tryied to uninstall everything about nodejs and all frameworks, then install it back, but it did not help, so i ended up reinstalling whole system. I would do it either way, because my windows instance was like 5 years old. I am new to nodejs world so i was trying different versions of frameworks, several tools and libraries so i probably broke the environment somewhere on the way. In any case, its working now finally 🙂 Thanks for your time! Have a nice day.