Problem with Download PDF Report uploaded through API

I am facing below error when Downloading Report uploaded through API

Fatal error : Uncaught TypeError: Unsupported operand types: string + float in C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Mpdf.php:6535 Stack trace: #0 C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Mpdf.php(16061): Mpdf\Mpdf->finishFlowingBlock(true) #1 C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Tag\BlockTag.php(234): Mpdf\Mpdf->printbuffer(Array, 0) #2 C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Tag.php(240): Mpdf\Tag\BlockTag->open(Array, Array, 1) #3 C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Mpdf.php(13921): Mpdf\Tag->OpenTag(‘DIV’, Array, Array, 1) #4 C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Mpdf.php(12500): Mpdf\Mpdf->WriteHTML(’<div style="tex…’, 4) #5 C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Mpdf.php(13447): Mpdf\Mpdf->_getHtmlHeight(’<div style="tex…’) #6 C:\Hemex LIS\xampp\htdocs\OpenEMR\interface\patient_file\report\custom_report.php(870): Mpdf\Mpdf->WriteHTML(’ <div class="co…’) #7 {main} thrown in C:\Hemex LIS\xampp\htdocs\OpenEMR\vendor\mpdf\mpdf\src\Mpdf.php on line 6535

Please provide me solution.

@Milan can you share more details about when is this error triggered? What feature you are trying to use. I may be able to help you further. I have worked extensively on PDF reports in OpenEMR for both custom and existing functionality.

I am using Upload Document API, it upload document properly on OpenEMR.
But when we download that document from OpenEMR it gives error.
This download feature is not working properly with OpenEMR 7.0.2, but working properly with OpenEMR 7.0.0