TCPDF ERROR

[renatobez]

I installed the plugin and until then it was printing normally glpi, now this error is appearing and I don't know how to solve it:
TCPDF ERROR: Some data has already been output, can't send PDF file

[yllen]

Version of GLPI?
Version of the plugin?
Which fields do you want to print in PDF and for which item?

[renatobez]

GLPI: GLPI 10.0.5
Plugin: 3.0.0
I'm trying to print the page of a ticket, using the side tab of the plugin, when I click on generate pdf, it causes an error.

[yllen]

Which part of the ticket do you want to print?

[renatobez]

basically all ticket fields

[yllen]

can you give me errors in glpi php-error.log? (in files directory/_logs)

[yllen]

You have this error where some data are missing in the export. You have the complete error in glpi logs

[renatobez]

yes basically these are the error messages:

[2023-02-10 08:22:13] glpiphplog.WARNING: *** PHP Warning (2): include_once(): Failed opening '/var/www/html/glpi/plugins/pdf/vendor/autoload.php' for inclusion (include_path='.:/usr/share/php') in /var/www/html/glpi/plugins/pdf/setup.php at line 38
Backtrace :
plugins/pdf/setup.php:38 include_once()
src/Plugin.php:294 plugin_init_pdf()
src/Plugin.php:248 Plugin::load()
inc/includes.php:86 Plugin->init()
ajax/actorinformation.php:39 include()

[2023-02-10 08:22:13] glpiphplog.WARNING: *** PHP Warning (2): include_once(/var/www/html/glpi/plugins/pdf/vendor/autoload.php): failed to open stream: No such file or directory in /var/www/html/glpi/plugins/pdf/setup.php at line 38
Backtrace :
plugins/pdf/setup.php:38 include_once()
src/Plugin.php:294 plugin_init_pdf()
src/Plugin.php:248 Plugin::load()
inc/includes.php:86 Plugin->init()
ajax/comments.php:37 include()

[2023-02-10 08:22:13] glpiphplog.WARNING: *** PHP Warning (2): include_once(): Failed opening '/var/www/html/glpi/plugins/pdf/vendor/autoload.php' for inclusion (include_path='.:/usr/share/php') in /var/www/html/glpi/plugins/pdf/setup.php at line 38
Backtrace :
plugins/pdf/setup.php:38 include_once()
src/Plugin.php:294 plugin_init_pdf()
src/Plugin.php:248 Plugin::load()
inc/includes.php:86 Plugin->init()
ajax/comments.php:37 include()

[2023-02-10 08:22:15] glpiphplog.WARNING: *** PHP Warning (2): include_once(/var/www/html/glpi/plugins/pdf/vendor/autoload.php): failed to open stream: No such file or directory in /var/www/html/glpi/plugins/pdf/setup.php at line 38
Backtrace :
plugins/pdf/setup.php:38 include_once()
src/Plugin.php:294 plugin_init_pdf()
src/Plugin.php:248 Plugin::load()
inc/includes.php:86 Plugin->init()
front/helpdesk.public.php:38 include()

[yllen]

Which directory had you upload her:https://github.com/yllen/pdf/releases?
You must already upload the first one glpi-pdf-3.0.0.tar.gz

[ratado]

I´m using GLPI 10.0.10 and plugin Print with version 3.0.0. I had the same error. I fix this including the command bellow in common.class.php file, on line 418:

final function generatePDF($tab_id, $tabs, $page=0, $render=true) {
...
      ob_end_clean(); /* Fix error of TCPDF */
      if($render) {
         $this->pdf->render();
      } else {
         return $this->pdf->output();
      }
}

Could you evaluate this solution?