conet | write simple linux network server and run it in parallel

I have a sheet where the query formula used is very simple.

Here is the test sheet

It just have to display the conetents of the second sheet in the first. Unfortunately, at some point the cell values are merged into single cells.

The example below shows till Apple1 to Apple 10 the data is merged in row 1.

I need a reason for this error and please avoid answering like, delete the row 15 of fruits tab sheet to correct.

Any cause for this is really appreciated.

Sheet2

Sheet1

I am currently trying to submit a request using the Swagger Inspector using multipart/form-data header to allow the submission of a file in conjunction with json data.

The JSON body of my request looks like:

And the headers with file upload look like:

For requests where I am just sending json to the server the Content-Type header is set to application/json and it is able to read from the body box. However I do not understand how this interface allows me to specify that the information coming from the body field is json and despite there being files on on the request.

I have seen requests that define multiple data types using the Conetent-Disspostion header, that look this this (reffenced from this Stack Overflow Post):

I was following a tutorial to learn multi-modules in maven, but what was being presented raised a question:

Is there a possibility to create a multi-module project where only one module accesses the database and the others use this connection for their respective controllers?

Basically what I want is to use the same repository folder to scan with each datasourceconfig in all modules.

The structure I imagined and even started to implement was:

I have looked into trying to test internet connection to prevent people from being left on a loading screen for too long and I haven't found a good method for this. Is there a way I can figure out how long my loading animation has run for and if it exceeds x amount of seconds/ minutes to display an alert to check the connection? I am familiar with JavaScript and some libraries and open to other languages just want the job done. Thanks!

P.S.: Below is the code and animation I have as the loading screen and because if it doesn't connect to a jQuery CDN it won't load I want to mitigate time people spend on said screen.

I crated a page indes.php with the following code :

I want to make a dialog box where the user can see the image that he/she has just uploaded. The file uploading systems works fine but when I want to put the image into the dialog box dynamically only an empty box appears.

HTML Code:

I am trying to sort file content based on the first two columns value:

My file content is:

File name : ComplexMapFileReader.txt

And the conetent is: