Declaration of PdfTemplate::addPage() should be compatible with TCPDF::AddPage

When I make a change or save a PDF view I get the following errors:

<strong>Strict warning: Declaration of PdfTemplate::addPage() should be compatible with TCPDF::AddPage($orientation = '', $format = '', $keepmargins = false, $tocpage = false) in require_once() (line 24 of /var/www/drupal/sites/all/modules/views_pdf/views_pdf_template.php). 

Backtrace:</strong>

require_once('/var/www/drupal/sites/all/modules/views_pdf/views_pdf_template.php') views_pdf.module:167
_views_pdf_include_pdf_lib() views_pdf.module:65
views_pdf_get_font_list() views_pdf_plugin_display.inc:390
views_pdf_plugin_display->options_summary(Array, Array) admin.inc:1706
views_ui_get_display_tab_details(Object, Object) admin.inc:1537
views_ui_get_display_tab(Object, 'p_display_invoice_pdf') admin.inc:1133
views_ui_edit_form(Array, Array, Object, 'p_display_invoice_pdf') 
call_user_func_array('views_ui_edit_form', Array) form.inc:798
drupal_retrieve_form('views_ui_edit_form', Array) form.inc:339
drupal_build_form('views_ui_edit_form', Array) form.inc:131
drupal_get_form('views_ui_edit_form', Object, 'p_display_invoice_pdf') admin.inc:923
views_ui_edit_page(Object, 'p_display_invoice_pdf') 
call_user_func_array('views_ui_edit_page', Array) menu.inc:517
menu_execute_active_handler() index.php:27

<strong>Strict warning: Declaration of PdfTemplate::addPage() should be compatible with TCPDF::AddPage($orientation = '', $format = '', $keepmargins = false, $tocpage = false) in require_once() (line 24 of /var/www/drupal/sites/all/modules/views_pdf/views_pdf_template.php). 

Backtrace:</strong>
require_once('/var/www/drupal/sites/all/modules/views_pdf/views_pdf_template.php') views_pdf.module:167
_views_pdf_include_pdf_lib() views_pdf.module:65
views_pdf_get_font_list() views_pdf_plugin_display.inc:390
views_pdf_plugin_display->options_summary(Array, Array) admin.inc:1706
views_ui_get_display_tab_details(Object, Object) admin.inc:1537
views_ui_get_display_tab(Object, 'p_display_invoice_pdf') admin.inc:1133
views_ui_edit_form(Array, Array, Object, 'p_display_invoice_pdf') 
call_user_func_array('views_ui_edit_form', Array) form.inc:798
drupal_retrieve_form('views_ui_edit_form', Array) form.inc:339
drupal_build_form('views_ui_edit_form', Array) form.inc:131
drupal_get_form('views_ui_edit_form', Object, 'p_display_invoice_pdf') admin.inc:923
views_ui_edit_page(Object, 'p_display_invoice_pdf') 
call_user_func_array('views_ui_edit_page', Array) menu.inc:517
menu_execute_active_handler() index.php:27