Mismatch encoding

When executing the import and delete command, an error will be thrown if the specified encoding (default is UTF-8) mismatches the actual encoding of the specified CSV file.

Error message

ERROR: Failed to decode the specified CSV file.
ERROR: The specified encoding (<<encoding>>) might mismatch the actual encoding of the CSV file.

Implementation

After decoding the header row of the CSV file by the specified encoding (default is UTF-8), the error will be thrown if the decoded string contains untranslatable characters.

Untranslatable characters are � and ? (described in iconv-lite)