An error occured :(

Error code : err:FODC0007
Error stack trace : Stopped at /sites/fontaine/resource/basex/webapp/synopsx/models/synopsx.xqm, 225/17: [FODC0007] Invalid database name: ''. Stack Trace: - /sites/fontaine/resource/basex/webapp/synopsx/models/tei.xqm, 95/28 - /sites/fontaine/resource/basex/webapp/synopsx/models/synopsx.xqm, 167/36 - /sites/fontaine/resource/basex/webapp/synopsx/models/synopsx.xqm, 167/51