ng-apexcharts | one simple component that enables you to use apexcharts | Chart library

I have a app that is currently deployed on heroku and working perfectly fine. I created a new heroku app and tried to run the same branch. I installed nodejs and all the configuration is the same but for some reason the build is failing at heroku-postbuild: "ng build --prod". It works fine on the previous instance I have on heroku but wont work on the new one. I don't know what i am missing as the information on the error is minimal. I am attaching my package.json as well as the error message I get. any help will be appreciated and let me know if you need me to upload anything else.

package.json

I'm using angular ng-apexcharts and I need to display the datalabels in two lines. I try to use "\n" but still can't make it as 2 lines

I am following this article to work with charts in angular. Even following it step by step I am still getting this error. Can someone please explain to me what the error is and why it is happening?

My app.component.ts:

I have this line of code in almost every component file where I have subscribe to an observable returning from singleton service file.

destroy$ : Subject = new Subject()

My ApexCharts' Area Chart is working correctly until I add "useHash:true" to the routerConfig and my Area Chart become Line Chart.

How can I have my Area Chart back while using "useHash:true" in the routerConfig?

Excerpt of package.json

I'm trying to make a graph with ChartJS, but I can't get it...

I have followed a lot of tutorials but I get the same problem always.

This is my app.module:

I'm trying to build and deploy angular application using gitlab-ci here is my config

I encouter a problem with my app that has a main.js with a size of 8.34 MB by defalt (ng build). I tested a lot ! of things to reduce it but i just don't arrive to..

I really need that the size be less than 2 mb.. ( and i think it's huge too..) Thanks for help ! What i tried (size of main.js) :

While I am creating the production build using ng build --prod while compiling But working perfectly fine in case of development mode, How can I solve this?

I am using .toLowerCase() in many places how can i identify where exactly this method is causing error or is this method is actually causing error because if it is causing error then it should be present in case of development as well. Please help how i identify what is exactly causing the issue

getting below error: