patterns: python: - pattern: "No module named" error_type: ImportError what_happened: Python couldn't find the specified module. why_happened: The module you tried to import isn't installed or Python can't find it in the search path. how_to_fix: - Install the missing package: pip install package-name - Check your virtual environment is activated - Verify PYTHONPATH includes the module location - Check for typos in the module name severity: high - pattern: "list index out of range" error_type: IndexError what_happened: You tried to access a list index that doesn't exist. why_happened: The index you specified is greater than or equal to the list length. how_to_fix: - Check the list length before accessing: len(my_list) - Remember Python uses 0-based indexing - Use negative indices to access from the end severity: medium - pattern: "division by zero" error_type: ZeroDivisionError what_happened: You attempted to divide by zero. why_happened: Division and modulo operations don't allow zero as the divisor. how_to_fix: - Check if divisor could be zero before dividing - Add a condition to handle zero case severity: medium - pattern: "cannot concatenate" error_type: TypeError what_happened: You tried to combine incompatible types. why_happened: Python doesn't know how to combine these types together. how_to_fix: - Convert values to the same type first - Use str() to convert numbers to strings - Use int() or float() to convert strings to numbers severity: medium javascript: - pattern: "is not a function" error_type: TypeError what_happened: You tried to call something that isn't a function. why_happened: The value you're calling () on is not a function - it might be undefined, null, or another type. how_to_fix: - Check if the value is defined before calling - Use typeof to verify it's a function - Check for typos in the function name severity: high - pattern: "is undefined" error_type: ReferenceError what_happened: You referenced a variable that is undefined. why_happened: The variable exists but hasn't been assigned a value. how_to_fix: - Initialize variables before using them - Check if variables are properly imported - Use null instead of undefined when appropriate severity: high - pattern: "is not defined" error_type: ReferenceError what_happened: You referenced a variable that doesn't exist. why_happened: The variable name is not in scope or was never declared. how_to_fix: - Declare the variable with const, let, or var - Check for typos in the variable name - Ensure imports are working correctly severity: high go: - pattern: "nil pointer dereference" error_type: panic what_happened: You tried to access a field or method on a nil pointer. why_happened: The pointer is nil and doesn't point to a valid object. how_to_fix: - Check if pointers are nil before dereferencing - Ensure structs are properly initialized - Use pointers only when necessary severity: critical - pattern: "index out of range" error_type: panic what_happened: Array or slice index is out of bounds. why_happened: The index you specified is outside the valid range for the slice/array. how_to_fix: - Check the slice/array length before indexing - Use for range to iterate safely - Remember Go uses 0-based indexing severity: critical rust: - pattern: "borrow checker" error_type: borrow_check_error what_happened: Rust's borrow checker prevented the operation. why_happened: You tried to have multiple mutable references or use a value after it was moved. how_to_fix: - Use references (&) instead of moving ownership - Clone the value if you need multiple owners - Use Rc/Arc for shared ownership - Restructure your code to respect ownership rules severity: high - pattern: "trait bounds" error_type: trait_error what_happened: A type doesn't implement the required trait. why_happened: The type doesn't have the necessary trait implementation for the generic function. how_to_fix: - Derive the trait if possible: #[derive(Debug)] - Implement the trait for your type - Use trait bounds in generic functions severity: medium cli: - pattern: "command not found" error_type: CommandNotFound what_happened: The command you tried to run doesn't exist. why_happened: The command is not installed or not in your PATH. how_to_fix: - Install the command/tool - Check the spelling of the command - Verify the command is in your PATH - Use which or whereis to locate the command severity: medium - pattern: "permission denied" error_type: PermissionError what_happened: You don't have permission to perform this operation. why_happened: The file/folder permissions don't allow your user to access or modify it. how_to_fix: - Use chmod to change permissions - Use sudo for admin operations - Check ownership of the file/directory severity: high - pattern: "no such file or directory" error_type: FileNotFound what_happened: The file or directory doesn't exist. why_happened: The path you specified doesn't exist or has a typo. how_to_fix: - Check the path for typos - Use absolute paths - Check if you're in the right directory severity: high docker: - pattern: "connection refused" error_type: DockerConnectionError what_happened: Docker daemon is not responding. why_happened: The Docker daemon isn't running or you don't have permission to access it. how_to_fix: - Start Docker daemon: sudo systemctl start docker - Check Docker is running: docker info - Add user to docker group: sudo usermod -aG docker $USER severity: high - pattern: "image not found" error_type: DockerImageNotFound what_happened: Docker couldn't find the specified image. why_happened: The image doesn't exist locally or in the configured registries. how_to_fix: - Pull the image: docker pull image-name - Check for typos in the image name - Verify the registry is accessible severity: medium git: - pattern: "not a git repository" error_type: GitNotRepo what_happened: You're not inside a Git repository. why_happened: The current directory and its parents don't contain a .git folder. how_to_fix: - Navigate to a git repository directory - Initialize a new repo: git init - Clone a repository: git clone url severity: medium - pattern: "would be overwritten" error_type: GitMergeConflict what_happened: Git would overwrite uncommitted changes. why_happened: You have local changes that would be lost by the operation. how_to_fix: - Commit your changes: git add . && git commit - Stash changes: git stash - Discard changes: git checkout -- . severity: medium kubernetes: - pattern: "connection refused" error_type: K8sConnectionError what_happened: Can't connect to Kubernetes cluster. why_happened: kubectl can't reach the cluster - it might not be running or your kubeconfig is wrong. how_to_fix: - Check cluster is running - Verify kubeconfig: kubectl config view - Check context: kubectl config current-context - Ensure VPN/network access if remote cluster severity: high - pattern: "not found" error_type: K8sResourceNotFound what_happened: The Kubernetes resource doesn't exist. why_happened: The resource name or type specified doesn't exist in the namespace. how_to_fix: - Check resource exists: kubectl get - Check you're in the right namespace: kubectl config view --minify - Verify resource name spelling severity: medium npm: - pattern: "ENOENT" error_type: NPMError what_happened: A file or directory doesn't exist. why_happened: npm can't find the specified file or directory, often related to missing dependencies. how_to_fix: - Run npm install to install dependencies - Check package.json exists - Clear npm cache: npm cache clean --force severity: medium - pattern: "EACCES" error_type: PermissionError what_happened: npm doesn't have permission to access files. why_happened: Permission issues with npm's cache or global packages directory. how_to_fix: - Fix npm permissions or use nvm - Or run with sudo (not recommended) - Change npm prefix to a writable directory severity: high