# Troubleshooting

> Common StackQL errors and resolutions - authentication, provider registry, server mode, PostgreSQL wire connections.

Source: https://stackql.io/ai/troubleshooting

Each page covers one error or symptom, with the root cause and the resolution.

## Pages

- [Common StackQL Errors](/ai/troubleshooting/common-stackql-errors) - missing providers, required parameters, authentication, rate limits, and MCP gating