contactForm | simple contact us form with jQuery validation | Form library

I'm just making a form to report an error, and when the user writes an error to the form and sends it, the data is written to the csv file, but when he writes another one, the previous one is deleted and overwritten with the current one to do so so that the data is stored below and didn't they rewrite the previous ones?

And one more thing, the form is made in flask.

Flask code:

I cannot Save comments in django

my post model is

Using Symfony Forms, HTML is generated that looks like this:

I'm using node.js for backend contact form and nodemailer for sending the message. My problem is that whenever I correctly fill inputs it still shows me an error that my inputs are not correct and it doesn't send the message. Thank you in advance

Here is my code:

Validation

I'm new to Reactjs and this is my first webapp created with it, so probably it is just a petty error this one I'm gonna ask you to help me with. Basically I'm trying to validate my form but it doesn't work. It doesn't matter if I fill the form or leave it blank, if I press the send button, it gets sent, complitely bypassing my validation system. This is my form component, I'm using emailjs to handle the email sending (it works perfectly). Also the state of the component gets updated without any problem, it's just the validation itself that gets bypassed. I hope you can help me:

application.js

I'm trying to add a validation function in my form, but when I test it I get "Uncaught TypeError: Cannot read property 'handleValidation' of undefined". Since I'm new to reactjs (this is my first webapp made with react) I don't seem to be able to find where the error is. The behavior of this form is: when a user clicks on submit, it first performs the validation, then if valid submit the form via email (to do this I'm using emailjs). Like I said, it fails on the validation step (while everything else works fine, even the email). I hope you can help me, here is my form component:

I have some issues where I don't really know where the problem in the code is. I've searched a bit on it but no luck.

I've been trying to make a contact form using Angular Reactive Forms and with HttpClient to make the post requests and such. Has anyone got any input in regards to this? Problem is located at the FormData.append part. Error message I get is "Object is possibly 'null'." for the three formData.appends I use.

Component:

I get the error below when I try to send an email from the contact form in React.js and Nodemailer. I have a problem because I cannot diagnose where the problem lies. After clicking the send button in forms, no window with an error appears on the screen. Where is the reason why e-mails are not being sent?