2020-12-22 08:50:38,532 WARN Thread-33 (PDFBoxPDFHandler.java:60) - PDF Document is encrypted. Trying empty password...
2020-12-22 08:51:29,608 WARN Thread-33 (ExtensionFileHandler.java:200) - Parsing failed with message: java.lang.ArrayIndexOutOfBoundsException: arraycopy: length -1 is negative
2020-12-22 08:51:30,017 WARN Thread-33 (ExtensionFileHandler.java:200) - Parsing failed with message: java.lang.ArrayIndexOutOfBoundsException: arraycopy: length -1 is negative
2020-12-22 08:59:54,668 WARN XML-RPC-1 (RPCSearchHandler.java:158) - org.apache.lucene.index.IndexNotFoundException: no segments* file found in MMapDirectory@/opt/iliasdata/lucene/iliasschoolmaster_8484 lockFactory=org.apache.lucene.store.NativeFSLockFactory@207e060d: files: [_j.fdt, _j.fdx, _k.fdt, _k.fdx, _l.fdt, _l.fdx, write.lock]
2020-12-22 08:59:56,000 WARN XML-RPC-1 (RPCSearchHandler.java:158) - org.apache.lucene.index.IndexNotFoundException: no segments* file found in MMapDirectory@/opt/iliasdata/lucene/iliasschoolmaster_8484 lockFactory=org.apache.lucene.store.NativeFSLockFactory@207e060d: files: [_j.fdt, _j.fdx, _k.fdt, _k.fdx, _l.fdt, _l.fdx, write.lock]
"no segments* file found" leads to a problem I do not know. Maybe some problem with PDF?