Pine Script errors can be frustrating when TradingView reports several compiler messages at once. Fixing the first error may expose another one, and a small syntax problem can prevent an otherwise useful indicator or strategy from running at all.
TradingView Xen includes a Fix Pine Errors task designed for this type of problem. You can give Xen the Pine Script and the errors reported by TradingView, and it will analyse the code, make the required corrections, and return an updated version ready to test again.
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The quickest way to repair a script is to give Xen the same information you would use when debugging it manually. Open the code in the TradingView Pine Editor and try to compile it. TradingView will show the compiler errors in the console, usually with a line number and a short explanation of the problem.
In the video above, a Donchian Breakout Strategy contains several deliberate errors. The broken strategy is first compiled in TradingView so you can see the actual error messages. The Pine Script and those messages are then supplied to Xen using the Fix Pine Errors task.
Repair Pine Script Errors Using AI
Xen reads the complete script rather than treating each compiler message in isolation. This helps because a single mistake can generate several TradingView errors, and changing one part of the script can affect code elsewhere.
The corrected Pine Script is returned as a complete strategy. You can copy it back into the TradingView Pine Editor and compile it again. In the Donchian example, the repaired strategy compiles successfully after you paste the Xen version back into TradingView.
Not every Pine Script problem is a missing bracket or spelling mistake. Errors can come from incorrect function calls, invalid arguments, version differences, variable scope, strategy functions being used incorrectly or code copied from an older Pine Script version.
Providing the complete script gives Xen enough context to determine what the code is trying to do before making changes. This is especially useful when repairing strategies or indicators with several related errors rather than one obvious compiler problem.
Compilation steps
Removing compiler errors means the script can run, but it doesn't prove the trading logic is correct. After a repair, add the script to a chart and check that plots, entries, exits and alerts behave as expected.
For strategies, it is also worth running the Strategy Tester and comparing the behaviour with the intended rules. AI is useful for finding and fixing code problems quickly, but you should still do the final check inside TradingView.
Useful when working with existing Pine Script
The Fix Pine Errors task is not limited to code created by Xen. You can use it with Pine Script you wrote yourself, older scripts that no longer compile, code produced by another AI tool or scripts you are modifying with additional features.
Instead of repeatedly changing individual lines and recompiling the script, you can pass the code and TradingView error messages to Xen, review the repaired version, and continue testing from there.
