HTTP Error 500

buck1942 · Post by **buck1942** » 2019-09-20 16:04

I have been using Appgini for years, but in recent months, on two different servers, I have been getting:
=======================================================================
This page isnâ€™t working buckswebsite.net is currently unable to handle this request.
HTTP ERROR 500

=======================================================================
I have not developed anything new for a long time. It is strange the same problem is on two separate servers.

I have several applications on each server, but they all return the same error.

Any tho'ts would be a big help.

Buck

pbottcher · Post by **pbottcher** » 2019-09-20 18:32

Hi,

can you have a look at the webserver error log to see what causes that error.
Did the environment on the server change, eg. new PHP version?

buck1942 · Post by **buck1942** » 2019-09-21 01:06

Follows is information from the error.log... I have this same problem on two different websites that I maintain
I appreciate your taking a look.

This is the error reported from /home/bucksweb/public_html/appgini/rmb2019a/header.php
-------
[20-Sep-2019 19:19:34 UTC] PHP Warning: Use of undefined constant datalist_db_encoding -
assumed 'datalist_db_encoding' (this will throw an Error in a future version of PHP)
in /home/bucksweb/public_html/appgini/rmb2019a/header.php on line 8

=======================================================================================
here is part of /home/bucksweb/public_html/appgini/rmb2019a/header.php showing line 8
=======================================================================================

<!DOCTYPE html>
<?php if(!defined('PREPEND_PATH')) define('PREPEND_PATH', ''); ?>



 <html class="no-js"> 
<head>
<meta charset="<?php echo datalist_db_encoding; ?>"> <<--------------LINE 8
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1.0">

...

pbottcher · Post by **pbottcher** » 2019-09-21 06:25

Hi,

thanks, what version of AppGini are you using?

can you add

if(!defined('datalist_db_encoding')) define('datalist_db_encoding', 'UTF-8');

to the header.php and maybe replace UTF-8 with whatever you DB encoding is set to.

<!DOCTYPE html>
<?php if(!defined('PREPEND_PATH')) define('PREPEND_PATH', ''); ?>
if(!defined('datalist_db_encoding')) define('datalist_db_encoding', 'UTF-8');



 <html class="no-js"> 
<head>

onoehring · Post by **onoehring** » 2019-09-21 08:10

Hi buck1942,

I would also think it's some problem with a new php version. I suppose all sites are running on the same host. This will probably mean, all sites are using a newer php version as well.

Did you post the contents from the header.php file or from the browser source window?
My header.php looks different (first lines only):

Code: Select all

<?php if(function_exists('set_headers')) { set_headers(); } ?><!DOCTYPE html>
<?php if(!defined('PREPEND_PATH')) define('PREPEND_PATH', ''); ?>
<?php if(!defined('datalist_db_encoding')) define('datalist_db_encoding', 'UTF-8'); ?>
<!--[if lt IE 7]>      <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]>         <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]>         <html class="no-js lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]-->
	<head>
		<meta charset="<?php echo datalist_db_encoding; ?>">
		<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
		<meta name="description" content="">

As pbÃ¶tcher suggested, there is some php code before that line 8 you are talking about that actually defines that variable. As I am using AppGini since version 5.75, maybe it's because your AG Version is old (and thus generating old code)?

Olaf

buck1942 · Post by **buck1942** » 2019-09-25 15:24

I thank you for your suggestions... I have tried them all, to no avail.

I upgraded to Appgini 5.76 and that did not help.

I am going to wait, months or so, to see if things settle down. I am tired of debugging and I am sure, at least at different levels, the problem is shared by PHP 7.xx and newer versions Appgini.

I'm sure this too will pass...

Buck

p.s. Applications I write outside of Appgini, in php, work well on PHP 7.xx. In all fairness, what I write in noway compares to the complexity of Appgini, which is a fine product

buck1942 · Post by **buck1942** » 2019-10-11 04:05

ALAS... my error 500 is fixed.

I wrote a simple app that would read and display a database to help isolate the problem.

I contacted my website provider... he had set some parameter incorrectly. He fixed it in matter of minutes and I am, once again, a happy camper.

I am running PHP 7.27 and Appgini 5.80 (the problem was fixed before I upgraded to 5.80...) looking forward to trying the math functions in 5.80... I have wanted that feature for years.

Thanks again to those that tried to give me a helping hand.

Buck

onoehring · Post by **onoehring** » 2019-10-11 07:10

Hi Buck,

thanks for reporting back.
Olaf

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