Error 500 null in jsp

Flailing around in the JSP code will not help. Find out where your server stores the servlet code and get the stack trace from the logs. If you are using tomcat , the "work" and "logs" directories are the place to start. Thanks for your replies dear.. I solved the problem actually there was problem in coding some thing missing.. Now it works fine.. As a visitor, you may ignore it, but as a website administrator, you cannot afford to ignore it and get rid of it as soon as possible.

As not only the website frontend but also the WordPress administrator dashboard might not be available to access. In this article we will walk you through some of the reasons why this error occurs, and how to avoid it, and why it is important to invest in a reliable web hosting server to avoid this error and improve the website uptime. The frequent occurrence of HTTP error is bad for the reputation of your business and will lead to visitors losing trust in your brand.

Besides the reputation, it will also hurt your search engine rankings. Hence it is advised to avoid this error, and deeply understand what it is all about and how to troubleshoot. Sometimes it could be due to the problem in website configuration, while sometimes it has something to do with issues at the server, which might be beyond your control.

In one of our previous articles about HTTP Status codes , we have covered in detail the type of errors website users might encounter. While specifically indicates that the webserver is facing some kind of an Internal issue due to which the request made by the user agent could not be processed at that moment.

Sometimes this kind of error is momentary, which lasts for a few minutes and sometimes just a few seconds. But if the problem persists, chances are that there is a problem with the website. Also, it is found that often the issue arises due to incorrect configuration of the website, which you can fix at your end.

But if this is very frequent you should discuss the problem with the webserver tech support team to help you troubleshoot the issue. For a more specific kind of issue, you need to look into the specific error code using tools like MS IIS. Some of the most commonly occurring codes are as shown below:. If there is a internal server error on your WordPress website the users will not be able to access any of its pages, which indicates that there could be a problem at the root directory.

One of the most common causes of WordPress error is a corrupted. To fix this error you can replace the current htaccess file with another one. Sometimes you might not be able to see. Also, make sure that the file is correctly named. Read everything about htaccess file in wordpress here. This could happen due to some plugin or theme consuming a lot of processing memory, or if you are using too many plugins. Basically, if your WordPress website is consuming a lot of memory to process a request you might run out of memory limit.

You can increase the memory limit to troubleshoot this problem. This could be done by doing some modifications in the wp-config file or php. You can increase the memory limit by changing 64M to M, M, and so on. Alternatively, you can increase the memory limit through php. Should I store it into session object?? You should debug as to why "no" is null. Are you setting this valus in the request scope in your Java class? Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. This configuration should be the default setting. If the permission assignment is set differently, an error may occur.

You can change this with a command:. If this change does not solve the problem, you can also release all rights for each group for test purposes:. But only use this setting to locate the problem. Any user is allowed to rewrite the file, which is understandably a security risk. Sometimes errors occur because the script files have been moved, renamed, or deleted. Also check the. An equally common error is incorrectly formatting the.

To test whether the file is responsible for the error, you can temporarily rename it and reload the website. If you no longer receive the error message, you can repair the file or create a new one. A timeout can also lead to an error message. Are PHP scripts on your website set to access resources from other servers? Perhaps the resource is no longer available or server communication is down for some other reason.

One way to eliminate this source of error is of course to not make your site dependent on external resources. If this is not possible, you can increase the time limit of your script. It also makes sense to implement efficient error handling so that errors in the PHP script can be detected more accurately.

Could it be that the memory is overloaded? The memory limit determines how much memory a process may use. If more RAM is needed than is available, this could result in an internal server error. You can increase the limit as a temporary solution. To do this, add a command like this to php. In this example, you would set the memory provided to MB. If you enter a higher value, the web server will ignore it. Raising the limit is only a temporary solution: once your site is up and running again, you should look for the reason for the high RAM usage.

There is a high probability that the error can be found in the code of your website. If none of these methods offer you a solution, it is a good idea to contact your hosting provider. Before doing so, you can check the status of the servers: many hosting service providers will report the status of their servers via a status page or inform users via social media if a problem has occurred.

As a website visitor, there is little you can do if you encounter an internal server error.