file-upload | A polymer element for using ajax to upload files | File Upload library

I've written code for uploading a file along with other form inputs using html, ajax and php. I'm submitting the form using ajax. Everything is working in one server, but when I moved the code to a new server, I keep getting PARTIAL FILE UPLOAD ERROR.

Sample code is given below

HTML:

I have upgraded my angular to angular 13. when I run to build SSR it gives me following error.

I am trying to use the persistent build cache feature provided by angular but look like its not working for me, I am trying the below command

I am developing a form in Liferay 7.3.5. The purpose of the form is to validate the data before sending it AJAX to resources.

The code is working fine, the problem I have is that I cannot find the solution to validate the form fields before sending the data by AJAX. The AJAX code snippet is as follows

This is the endpoint I have:

I have an Angular 11 project with nguniversal. My homepage is fetching data from services, internal (translation keys object) and external (an express node server to display a list of links). The backend domain is different from the frontend domain address.

The website is displayed correctly, but for some reason, the translations and list of links are not loaded initially when I inspect the page source. Also, the meta and title tags are not visible in the page source. Although they are working.

I believe this should be essential for Search Engine Optimization.

I am loading the language keys from an internal translation service, as observable into the app.component.ts. The translation service itself is dependent on a window service which waits for the browser to load, isPlatformBrowser. The window service is needed to simulate the window object on the server.

I also tried fetching the api data, before or after platform browser initializes, but with no success.

What else am I missing?

EDIT, part of the code. Not sure if I should include the whole project code here:

I followed this guide to set up swiper slider in my Angular 8 application.

I get the below error when importing NgxUsefulSwiperModule into app.module.ts

ERROR in ./node_modules/ngx-useful-swiper/fesm2015/ngx-useful-swiper.js Module not found: Error: Can't resolve 'swiper/bundle' in 'C:\Users\Dan\NewAngular\node_modules\ngx-useful-swiper\fesm2015'

I tried deleting the node_modules folder and reinstalling everything but it fails every time.

Can someone please tell me what I'm doing wrong?

This is my package.json file

Class below is used to create a form in Django and get neccesary information. Problem is, it offers only one file to upload. I need to upload multiple files. I use Crispy forms.

My simplified view.py looks like:

I'm currently trying to build a file upload Input field with an icon as an input adornment, using Material UI. I want to be able to click the icon to upload a file.

Following the MUI documentation here: input adornment, I have tried to follow the exact formatting except using an IconButton instead of the Password visibility icon in the demo.

Here is a sample of my code: