TCPDF ERROR: Error in 1D barcode string

[h4cktim3]

Getting the following error while generating 1D barcode images in pdf document with array of barcodes using tcpdf module.\[quote\] "TCPDF ERROR: Error in 1D barcode string"\[/quote\]\[code\]if (file_exists("data1.txt")) {echo("<B>File Exists data1.txt</B>");$arrText = file("data1.txt");for ($i=0; $i<count($arrText); $i++) {echo("<P>$arrText[$i]</P>");$pdf->write1DBarcode("'".chop($arrText[$i])."'", 'UPCA', '', '', '', 18, 0.4, $style, 'N');$pdf->Ln();}} else {echo("<B>Cannot find file</B>");exit;}\[/code\]