Something went wrong
An unexpected error occurred.
UNKNOWN_ERROR
Symptoms
- The failure does not match any of the specific cases.
- It may happen only with one particular build.
Likely causes
- A fault we have not classified yet.
- An unusual ELF layout that fails in a way the parser does not report specifically.
- A browser extension interfering with the request.
How to fix it
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Retry, then try a second build
If a different ELF from the same project succeeds, the problem is that specific file. If nothing works, it is the environment.
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Try another browser
A clean browser without extensions rules out interference in one step and takes less time than disabling extensions one by one.
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Report it with the error code
Send the code shown on the error card together with your toolchain and the approximate ELF size — that is enough to reproduce it in most cases.