ORA-26871: unexpected string call (expecting

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ORA-26871: unexpected string call (expecting string)
Cause: Could be one of thefollowing reasons: 1) An attempt was made to invoke
OCIXStreamInChunkSend when the most recent LCR or chunk sent did not have
the OCI_XSTREAM_MORE_ROW_DATA flag set; 2) An attempt was made to
invoke OCIXStreamInLCRSend when the most recent LCR or chunk sent had
OCI_XSTREAM_MORE_ROW_DATA flag set.
Action: None