Develop Reference

Having some trouble with php mail on localhost with XAMPP

I'm trying to work locally so I installed XAMPP and need help resolving an issue while sending mail via a php script on localhost. I've tested everything on a web-facing server and it works fine.
I'm getting the error 'Cannot POST /php/mail.php' from http://localhost:3000/php/mail.php.
I've changed the php.ini and sendmail.ini files and believe they are correctly configured for it to work.
Getting some errors in the DevTools console related to inline scripts but I think they are related to the error page.
Is there somewhere else I can look to debug this error?

How to avoid "Content Security Policy: The settings of the page blocked the loading of a resource inline ("default-src")"?

i am developing an Ionic 4 App. But suddenly after starting the app with ionic serve --devapp i just got the error the text Cannot GET / on my page.
I have no idea what i did to make this error appear. Earlier i ran the command ionic cordova resources but i don't think that the error is related to the command...
I also get the error
Module not found: Error: Can't resolve 'core-js/es7/reflect'
in my Terminal, but i don't know if this error coheres with the error above.

Use ionic run, or set up a proxy, to avoid CORS issues.
Ionic posted a blog article about this, which would be useful if you need to use ionic serve for some reason. You almost certainly don't, however.

Mean app login not working on heroku

I have followed many tutorials on how to get mongodb and MEAN to work on heroku, and none of them have worked for me, I keep getting the 503 application error.
First I create the app, I do heroku addons:docs mongolab in the commandline, and after that I check my config and change my code so the mongoose connection is changed to the config string like this:
mongoose.connect(process.env.MONGOLAB_URI || mongodb://example:example#ds053312.mongolab.com:53312/todolist');
the second part is just an example, the one I use is the one with my information.
So after this I push my app to heroku, but when I try to run it, it still gives me the application error, and in f12 it says it's
Failed to load resource: the server responded with a status of 503
(Service Unavailable)
https://myapp.herokuapp.com/favicon.ico
What am I doing wrong? I have tried everything and none of the tutorials are working for me
EDIT: I have managed to get rid of the error by doing the following:
$ git init
$ git add .
$ git commit -m "initial version"
$ heroku apps:create
however, now that my app loads, it appears that the login and sign up features of my app doesn't work, I fill out the sign in/log in form and submit but the page just stays where it is without changing. Is there something else I was supposed to do to get these features to work?

I came here because my Heroku - deploy Login wasn't working, but Localhost was. Turns out I forgot to change the Login POST route.

Javascript not loading due to net::ERR_CONTENT_LENGTH_MISMATCH

I've got an app that runs fine locally, but barfs in production. (Classic problem, right?)
In production, the JS isn't firing correctly. When I open up the browser console, I see this error:
net::ERR_CONTENT_LENGTH_MISMATCH
When I look in the network tab of Developer Tools, is shows that it failed on a GET request for text/html.
It's a cryptic error. I've only found two other SO posts that even mention is and they're unsolved. (For the interested: first post and second post)
Any idea (1) what it means or (2) how to resolve it?

I am getting Error: net::ERR_CONTENT_LENGTH_MISMATCH
Have a look at your server logs to determine what the real issue is.
For me the problem lay somewhere between nginx and file permissions:
tail -f /usr/local/var/log/nginx/error.log or run nginx -t to determine your conf location, where you could specify a custom log path.
refresh the asset in your browser, eg http://localhost:3000/assets/jquery/jquery.js
You may see something like this in the logs:
"/usr/local/var/run/nginx/proxy_temp/9/04/0000000049" failed (13:
Permission denied) while reading upstream for file xyz
Heres how I fixed:
sudo nginx -s stop
sudo rm -rf /usr/local/var/run/nginx/*
sudo nginx

According to this bug report, that error occurs when an external resource length does not match the Content-Length header given in the response.
This might occur because of a misconfigured server, or (as a stretch) maybe some BOM characters got put into the file, or maybe even different lines endings (are you writing on a DOS machine and deploying to a UNIX machine?) may cause issues.
Hope this helps.

I had a similar issue when trying to interpret JSON results. It turned out that somewhere along the line an odd character landed in the database - in this instance the culprit was "â??". It is not clear how this value arrived in the database, but it is likely related to HTML encoding issues - "Â" character showing up instead of " " Either way, after removing the odd characters, the problem was solved.

I had similar issue
[crit] 6889#0: *14817 open() "/var/cache/nginx/proxy_temp/3/02/0000000023" failed (13: Permission denied) while reading upstream
it was because Nginx worker process were not able to access folder /var/cache/nginx/proxy_temp/ - I just changed the folder permissions and everything started working

I had similar issue developing locally on MAMP and using Chrome as browser. Same problematic websites on the live servers had no such issues. First I thought it was MAMP that was playing around and I checked settings like PHP versions mismatch, apache version etc., reinstalled, but the issue remained. At the end I just switched to using Brave browser (was delaying the shift to Brave for a while anyway) and that fixed it for me.
Hope this helps.

Javascript files 404'ing in my Sinatra app on Heroku

I have been developing a small app with Sinatra. Locally it works fine but when I deploy it Heroku my JavaScript paths seem to break and I have no idea what is causing this.
My directory set up is I have a "assets" folder in the root of my application with separated folders for both scripts and styles. The scripts folder has a few subdirectories. I have set my public folder in Sinatra using:
set :public_folder, __DIR__ + '/assets'
My styles work correctly and I am drawing a blank on what the problem is. Also worth noting I am using requirejs to load my JavaScript.
Here is the output from the console:
GET http://evening-hamlet-5644.herokuapp.com/scripts/utils/libraries/jquery.js 404 (Not Found) require.min.js:1884
GET http://evening-hamlet-5644.herokuapp.com/scripts/utils/templating/hogan.js 404 (Not Found) require.min.js:1884
2
Uncaught Error: Script error
http://requirejs.org/docs/errors.html#scripterror require.min.js:194
GET http://evening-hamlet-5644.herokuapp.com/scripts/utils/libraries/lodash.js 404 (Not Found) require.min.js:1884
Uncaught Error: Script error
http://requirejs.org/docs/errors.html#scripterror require.min.js:194
GET http://evening-hamlet-5644.herokuapp.com/scripts/utils/libraries/pusher.js 404 (Not Found) require.min.js:1884
Uncaught Error: Script error
http://requirejs.org/docs/errors.html#scripterror
Any help or a kick in the right direction would be great.
Thanks

You could run a console with the heroku toolbelt (something like heroku run bash --app <your app name>) and verify if you have your JS files up.
Greetings!

I'm not a Sinatra hacker, but I don't find any DIR in their docs. Try setting DIR to
File.dirname(__FILE__), which I do see in their docs

It would help if you posted the Sinatra code that renders the links to the javascript files (ie. haml views etc).
However, without the code, I have a feeling it may be because you should be using Sinatra's url helper. If that's not it, and you post your code, I'll take another look.