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By Rollbar
Is your program throwing a fit but those error messages are lost somewhere in the avalanche of print statements? Let's fix that! Enter stderr - Python's built-in solution for separating your normal program output from your "everything is on fire" messages. Think of your Python program as having two voices: stdout (its inside voice) and stderr (its "EVERYONE PANIC" voice).
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By Rollbar
Picture this: It's Black Friday, and you're circling a packed mall parking lot. Every space is taken, and cars are lined up waiting for spots. You keep circling, but there’s just no place to park and you run out of gas. When you see a java.lang.OutOfMemoryError it’s just like what you experienced in that overcrowded parking lot. The Java Virtual Machine (JVM) has run out of space to "park" new objects in memory. Now here's the thing about Java: it loves objects. It can't get enough of them.
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By Rollbar
It’s a vague, unhelpful message that feels more like a riddle than an error. You know something doesn’t belong, but you're left guessing what that "token" is and why it's unexpected. Let's demystify what’s really going on behind the scenes and get your code running smoothly again. The "SyntaxError: Unexpected token" in JavaScript occurs when the code contains a character or symbol that the JavaScript engine does not expect, often due to a typo or syntax mistake.
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By Rollbar
Imagine you're at a buffet, eagerly approaching what you think is the dessert table, only to find an empty space where the chocolate cake should be. That disappointing moment? That's pretty much what happens in your code when you encounter the infamous "Cannot read properties of undefined" error. Just as you can't slice a piece of cake that isn't there, JavaScript can't read a property of an object that doesn't exist. But don't worry!
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By Rollbar
Imagine you're a postal worker sorting through a mountain of packages. Some packages are ticking suspiciously, while others are leaking mysterious liquids. As a responsible postal worker, you have two choices: deal with these problematic packages yourself (throw) or slap a big "HANDLE WITH CARE" sticker on them and pass them along to the next person in line (throws). Think of throw as actually creating an error in your program. You use it when something goes wrong and you want to stop the program.
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By Rollbar
You've just stumbled into one of the most common jQuery pitfalls. The "jquery is not defined" error is a JavaScript ReferenceError that occurs when your script tries to use jQuery functions or methods, but the jQuery library is not properly loaded or initialized. How did this happen? Probably one of three reasons: Let’s start with the last reason as that’s the easiest to fix.
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By Rollbar
Your Java code was humming along smoothly until... BAM! An exception. No problem, you caught it. But wait, there's another. And another. Suddenly, you're juggling exceptions like you’re in the circus. Don't worry, Java's got your back. Java offers three ways to catch multiple exceptions: using multiple catch blocks for different exception types, the multi-catch feature to handle multiple exceptions in a single block, and a catch-all block for general exception handling.
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By Rollbar
If you've encountered the "document is not defined" error while working with JavaScript, you're not alone. This common error can be frustrating, but it's usually straightforward to resolve once you understand its causes. Let's explore what this error means, why it occurs, and how to fix it.
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By Rollbar
Over the past two and a half decades, Java has consistently been ranked as one of the top 3 most popular programming languages in the world . As a compiled language, any source code written in Java needs to be translated (i.e., compiled) into machine code before it can be executed.
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By Rollbar
An IllegalStateException is a runtime exception in Java that is thrown to indicate that a method has been invoked at an illegal or inappropriate time. To use an analogy, invoking a method in Java when the system is not in the appropriate state is like trying to start a car while it is in "Drive". Just as the car will not start because it is unsafe, a method call results in an IllegalStateException when the internal conditions necessary for its execution are not met.
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By Rollbar
Nick integrates Rollbar into a brand new Nestjs backend application. There's a bit of trouble getting rolling, and Nick's computer doesn't completely cooperate, but hey, he got it done!
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By Rollbar
Leverage Rollbar's People tracking feature and get additional visibility over which of your users are affected by each error, the history of errors experienced by a particular person, as well as the list of all people who have ever experienced an error. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Telemetry allows you to view a 'breadcrumb' of events leading up to an exception directly in the Item details view. Telemetry is currently available in the Javascript, iOS, .NET, and Node.js SDKs. (and more to come!) Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Simplify your error management workflow and configure Rollbar to automatically resolve items on deploy, or set an inactivity timer to resolve items if they have not occurred in a certain number of days. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Control the state and priority level of your incoming items, and learn how you can quickly act upon them via Slack! Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Rollbar is employed for a number of use cases, but the first and foremost of these is monitoring your code in production. In this installment of the solutions video series, you will learn how different Rollbar features enhance your ability to monitor and improve the customer experience for all users.
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By Rollbar
Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
The latest video in the Rollbar Solutions series, Low-Risk Releases, shows how Rollbar can be used to improve the release process for DevOps teams. Traditionally, releasing software has been a pain point for these teams; code changes made to higher environments provide opportunities for bugs to rear their ugly heads and affect customers directly. Rollbar's real-time monitoring and intelligence solutions help you find and fix these issues more quickly and effectively, reducing MTTA/MTTR metrics and thus the overall customer impact of these issues.
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By Rollbar
Learn how to link to log data in AWS CloudWatch from Rollbar to help you quickly understand the root cause of an error. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Configure your Django project with Rollbar easily! Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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Rollbar provides real-time error monitoring, alerting, and analytics for software developers. It collects and analyzes errors in web and server applications, so developers can find and fix them faster. Rollbar's live feed is used to detect errors and exceptions in real-time, especially useful immediately after deploys.
Use Rollbar to:
- Get live, granular, and contextual application error data
- Perform real-time root cause analysis on production errors
- Share a common monitoring diagnostic tool across Dev and Ops
Catch errors before your users do. Resolve errors in minutes, and deploy with confidence.