This is a reference entry from React error codes. A full explanation with fixes has not been written yet.
Expected an initialized chunk but got an initialized stream chunk instead. This payload may have been submitted by an older version of React.
%s is filled in by React at runtime.
- Category
- Minified React error
- Severity
- error
- Runtime
- both
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Source: React error codes. Data fetched 2026-09-25T01:43:12.930Z.