Frequent error popups for "Request textDocument/codeAction failed"

[skylize]

Seeing these popups quite frequently. Another user posted a screenshot of the popup in Clojurians: thread p1663365121814349. The Ouput View shows:

[Error - 11:36:30 PM] Request textDocument/codeAction failed.
  Message: Internal error
  Code: -32603 
[object Object]

So far, I have not spotted any negative side effects, beyond the distraction of the popup. The only pattern I have noticed is that it seems to trigger while my code is in an invalid state. Perhaps an upstream bug, with LSP choking on certain types of broken forms?

I'll let you know if I learn more.

[skylize]

Definitely an upstream issue in Clojure LSP. To all appearances seems to be fixed in nightly build of CLojure LSP.

[mjul]

As mentioned above the Internal error (-32603) is a problem in the Clojure LSP.

Cause and Workaround

This happens when there are URI-escaped (e.g. non-ASCII) characters in URI corresponding to the the file name, e.g. for a source file called hôpital.clj.

You can work around the issue by using ASCII-only file names and paths, e.g. misspelling the file name as hopital.clj.

Background

To save you some time, here is some troubleshooting information to help if you encounter this error.

Clojure LSP creates a log file where you can see the full stack trace. See information about where to find this file here: https://clojure-lsp.io/troubleshooting/

You will see a stack trace like this:

2024-07-18T07:56:15.523Z  ERROR [clojure-lsp.server:55] - Error receiving message: Internal error (-32603)
{:id 28, :method "textDocument/semanticTokens/range"}
com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine         PlatformThreads.java:  872
com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine         PlatformThreads.java:  896
                java.util.concurrent.ForkJoinWorkerThread.run    ForkJoinWorkerThread.java:  188
                  java.util.concurrent.ForkJoinPool.runWorker            ForkJoinPool.java: 1808
                       java.util.concurrent.ForkJoinPool.scan            ForkJoinPool.java: 1843
     java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec            ForkJoinPool.java: 1312
                     java.util.concurrent.ForkJoinTask.doExec            ForkJoinTask.java:  387
      java.util.concurrent.CompletableFuture$AsyncSupply.exec       CompletableFuture.java: 1760
       java.util.concurrent.CompletableFuture$AsyncSupply.run       CompletableFuture.java: 1768
                                    promesa.util.Supplier/get                    util.cljc:   34
                                promesa.exec/wrap-bindings/fn                    exec.cljc:  163
                                     clojure-lsp.server/fn/fn                   server.clj:  367
                   clojure-lsp.handlers/semantic-tokens-range                 handlers.clj:  435
                   clojure-lsp.handlers/skip-feature-for-uri?                 handlers.clj:  142
                             clojure-lsp.shared/uri->filename                   shared.clj:  223
                         clojure-lsp.shared/uri-obj->filepath                   shared.clj:  179
                                      java.nio.file.Paths.get                   Paths.java:   98
                                        java.nio.file.Path.of                    Path.java:  204
                    sun.nio.fs.UnixFileSystemProvider.getPath  UnixFileSystemProvider.java:  125
                              sun.nio.fs.UnixUriUtils.fromUri            UnixUriUtils.java:   88
java.lang.IllegalArgumentException: Bad escape

This stacktrace shows that Clojure LSP cannot figure out the path to your source file.

The cause is a bug in the conversion from the VS Code supplied URI for the file to the corresponding path, see the clojure-lsp.shared/uri-obj->filepath function for details.