Unable to upload Parquet File in a batch

Module: ingestion.DataIngestion
The function below is not working for parquet file. Even if you post the binary data under data parameter, it fails while the code tries to call json.dumps
upload_res = data_ingestion.uploadSmallFile(
batchId=newBatchId,
datasetId=dataset_id,
filePath=file_name,
data={"file":full_file_path},
verbose=True,
)