TLDR; I was editing the wrong file, let's go to bed.

We have this huge system that receives data from an API endpoint, does a whole bunch of stuff, going through three other servers, and then via some calculation based on the data received from the UI, and data received from the endpoint, it finally sends the calculated fields to the UI via websocket.

Poor me sitting for over 4 hours debugging and changing values in the logic file trying to understand why one of the fields ends up being null.

Of course every change needs a reboot to all the 4 servers involved, and a hard refresh of the UI.

I even tried to search for the word null in that file, but to no avail.

After scattering hundreds of console logs, and pulling my hair out, I found out that I am editing the wrong file.

I guess it's time for some sleep.

I have been debugging for like hours trying to figure out the cause an unknown bug spoiling my UI by making my elements overlap.
I'm working on a Unit Converter that takes kWh and then converts to mWh. (Logical Conversion: 1000 kWh = 1 mWh).
Just an easy shit i thought, using Javascript I just passed the dynamically generated kWh value to a function that takes maximum of 6 chars and multiply it by 0.001 to get the required result but this was where my problem started. All values came out as expected until my App hits a particular value (8575) and outputs a very long set of String (8.575000000000001), i couldn't figure the cause of this until i checked my console log and found the culprit value, and then i change the calculation logic from multiply by 0.001 to divide by 1000 and it came out as expected (8.575)

My question is that;
Is my math logically wrong or is this another Javascript Calculation setback?

TIL how time-delay relays are used in circuits with a hell lot of power. For example to power and control the motor of a machine that lifts 20 people up to the sky and back to ground again.
FYI this is a simple circuit. We will hopefully start experimenting with SPS/Speicherprogrammierbare Steuerung (Programmable Logic Controllers). I cannot wait to make use of our predesigned circuits with complex logic gates with the new unit we will get to know.
Unfortunately, we will do practical networking (testing cables for the signal strength and speed, building a network of telephones and call each other - guess this is going to be the funniest part lol, etc.) before the SPS and LOGO software phase.

Btw. I am doing an all-nighter rn and repeating everything we did in our recent signal calculation lesson. We have another exam tomorrow.