... write method can not handle UTf8 data ...

Net::SFTP::Foreign's write method begins like this: 

sub write {
    @_ == 3 or croak 'Usage: $sftp->write($fh, $data)';

    my ($sftp, $rfh) = @_;
    $sftp->flush($rfh, 'in') or return undef;

    utf8::is_utf8($_[2]) and croak "write method can not handle UTf8 d
+ata";
    ...

[download]

so, I'd say your $coords is in UTF-8, which the module simply doesn't seem to support.  More precisely, the code croaks if the utf8 flag of $_[2] (i.e. $data, or $coords) is on.

Try finding out if the flag is on for a good reason ('cos the data actually is (needs) UTF-8), or if it just got set by accidence — like when merging an ISO-Latin1 string with a UTF-8 one, which would cause the ISO-Latin1 part to be "upgraded". (see perluniintro)

In reply to Re: UTF8 error when using Net::SFTP::Foreign by almut
in thread UTF8 error when using Net::SFTP::Foreign by deadpickle

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