flowable/flowable-engine · error · FlowableException

Error while reading uploaded file

Error message

Error while reading uploaded file: ${e.getMessage()}

What it means

I/O failure in UserPictureResource.updateUserPicture: reading the uploaded multipart file's InputStream threw an exception while copying the picture bytes; the original exception message is interpolated. Indicates a client upload interruption or stream/IO problem.

Solutions

1. Check the uploaded file is complete and readable
2. Inspect the wrapped cause for the underlying IO error
3. Retry the upload

When it happens

Trigger: Thrown at modules/flowable-rest/src/main/java/org/flowable/rest/service/api/identity/UserPictureResource.java:124 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of flowable/flowable-engine@d6d39ce1c6 (2026-09-11). Data as JSON: /api/errors/262a765a1ae426d0. Report an issue: GitHub.

Appendix: source

Thrown at modules/flowable-rest/src/main/java/org/flowable/rest/service/api/identity/UserPictureResource.java:124

        if (multipartRequest.getFileMap().size() == 0) {
            throw new FlowableIllegalArgumentException("Multipart request with file content is required");
        }

        MultipartFile file = multipartRequest.getFileMap().values().iterator().next();

        try {
            String mimeType = file.getContentType();
            int size = ((Long) file.getSize()).intValue();

            // Copy file-body in a bytearray as the engine requires this
            ByteArrayOutputStream bytesOutput = new ByteArrayOutputStream(size);
            IOUtils.copy(file.getInputStream(), bytesOutput);

            Picture newPicture = new Picture(bytesOutput.toByteArray(), mimeType);
            identityService.setUserPicture(user.getId(), newPicture);

        } catch (Exception e) {
            throw new FlowableException("Error while reading uploaded file: " + e.getMessage(), e);
        }
    }
}

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