If i rebuild the catalog, the following logentries are shown. Has anyone ever seen the error after a migration? That only happens after the migration. Is it possible that a lib is missing for indexing the PDF?
2020-06-15 14:20:29,346 INFO [Plone:533][waitress] Catalog Rebuilt
Total time: 3.122103691101074
Total CPU time: 2.98133
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Error: Unknown character collection 'PDFXC30-Identity'
Syntax Warning: Invalid Font Weight
Syntax Warning: Invalid Font Weight
Syntax Warning: Invalid Font Weight
Syntax Warning: Invalid Font Weight