Troubleshooting

Node.js Agent

• I'm unable to install the Node agent
• Contrast causes my application to misbehave
• Invalid ELF Header
• I'm seeing messages like "could not rewrite [filename]"
• Connectivity Issues with the Node Agent

Contrast UI

• How to generate a HAR file
• On-Premise TeamServer installation fails on linux due to missing font
• MySQL Issue Upgrading from 3.5.7 or earlier on Windows
• Application shows up in the Contrast UI with (1) alongside it
• Resolving the error "The user specified as a definer ('contrast'@'%') does not exist"
• Invalid credentials accessing API

See all 11 articles

Java Agent

• Troubleshooting Java Agent Installation with the Exec Helper package
• AbstractMethodError thrown when running the Java agent
• NoClassDefFoundError thrown when running with the Java agent
• I see PermGen memory errors when running with the Java agent
• My Server doesn't appear on the Contrast UI
• I Do Not See Contrast Messages in My Console At Startup

See all 14 articles

.NET Agent

• Another IIS Profiler Detected
• Invalid Program Exception
• Third-Party Libraries Not Recognized
• A Resource Returns 0 Bytes
• Issue Loading Assembly Error
• How to get logs from the .NET agent

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Ruby Agent

• Application timeout on startup with Passenger
• How to get logs from the Ruby agent
• Connectivity issues with the Ruby agent

Contrast Plugins & SDK

• Connection Error with SDK: Connection refused
• Connection Error with SDK: Server returned HTTP response code: 401