"Internal Server Error" upon Index creation

[jugmac00]

• fresh Zope install
• create Catalog
• create ZCTextIndex (it shows a note "You must create a ZCTextIndex Lexicon first.")
• click add

Internal Server Error

The server encountered an unexpected internal server error

(generated by waitress)

stacktrace

2019-11-07 19:04:58 ERROR [Zope.SiteErrorLog:251][waitress] 1573149898.23523620.7471558915615186 http://localhost:8080/some_catalog/manage_addProduct/ZCTextIndex/manage_addZCTextIndex
Traceback (innermost last):
  Module ZPublisher.WSGIPublisher, line 151, in transaction_pubevents
  Module ZPublisher.WSGIPublisher, line 333, in publish_module
  Module ZPublisher.WSGIPublisher, line 251, in publish
  Module ZPublisher.mapply, line 85, in mapply
  Module ZPublisher.WSGIPublisher, line 57, in call_object
  Module Products.ZCTextIndex.ZCTextIndex, line 285, in manage_addZCTextIndex
  Module Products.ZCatalog.ZCatalog, line 368, in manage_addIndex
  Module Products.ZCatalog.ZCatalog, line 857, in addIndex
  Module Products.ZCTextIndex.ZCTextIndex, line 95, in __init__
LookupError: Lexicon "" not found
2019-11-07 19:04:58 ERROR [waitress:363][waitress] Exception while serving /some_catalog/manage_addProduct/ZCTextIndex/manage_addZCTextIndex
Traceback (most recent call last):
  File "/home/jugmac00/Tests/Zope/eggs/waitress-1.3.1-py3.6.egg/waitress/channel.py", line 356, in service
    task.service()
  File "/home/jugmac00/Tests/Zope/eggs/waitress-1.3.1-py3.6.egg/waitress/task.py", line 172, in service
    self.execute()
  File "/home/jugmac00/Tests/Zope/eggs/waitress-1.3.1-py3.6.egg/waitress/task.py", line 440, in execute
    app_iter = self.channel.server.application(environ, start_response)
  File "/home/jugmac00/Tests/Zope/src/ZPublisher/httpexceptions.py", line 30, in __call__
    return self.application(environ, start_response)
  File "/home/jugmac00/Tests/Zope/eggs/Paste-3.1.1-py3.6.egg/paste/translogger.py", line 69, in __call__
    return self.application(environ, replacement_start_response)
  File "/home/jugmac00/Tests/Zope/src/ZPublisher/WSGIPublisher.py", line 333, in publish_module
    response = _publish(request, new_mod_info)
  File "/home/jugmac00/Tests/Zope/src/ZPublisher/WSGIPublisher.py", line 251, in publish
    bind=1)
  File "/home/jugmac00/Tests/Zope/src/ZPublisher/mapply.py", line 85, in mapply
    return debug(object, args, context)
  File "/home/jugmac00/Tests/Zope/src/ZPublisher/WSGIPublisher.py", line 57, in call_object
    return obj(*args)
  File "/home/jugmac00/Tests/Zope/eggs/Products.ZCatalog-5.0.1-py3.6.egg/Products/ZCTextIndex/ZCTextIndex.py", line 285, in manage_addZCTextIndex
    REQUEST, RESPONSE, URL3)
  File "/home/jugmac00/Tests/Zope/eggs/Products.ZCatalog-5.0.1-py3.6.egg/Products/ZCatalog/ZCatalog.py", line 368, in manage_addIndex
    self.addIndex(name, type, extra)
  File "/home/jugmac00/Tests/Zope/eggs/Products.ZCatalog-5.0.1-py3.6.egg/Products/ZCatalog/ZCatalog.py", line 857, in addIndex
    index = base(name, extra=extra, caller=self)
  File "/home/jugmac00/Tests/Zope/eggs/Products.ZCatalog-5.0.1-py3.6.egg/Products/ZCTextIndex/ZCTextIndex.py", line 95, in __init__
    raise LookupError('Lexicon "%s" not found' % escape(lexicon_id))
LookupError: Lexicon "" not found

There should be no uncaught exception, but a friendly message that well - you have to create and choose a ZCTextIndex Lexicon first.

[d-maurer]

Jürgen Gmach wrote at 2019-11-7 10:10 -0800:

- fresh Zope install - create Catalog - create ZCTextIndex (it shows a note "You must create a ZCTextIndex Lexicon first.") - click add ... 2019-11-07 19:04:58 ERROR [Zope.SiteErrorLog:251][waitress] 1573149898.23523620.7471558915615186 http://localhost:8080/some_catalog/manage_addProduct/ZCTextIndex/manage_addZCTextIndex Traceback (innermost last): ... LookupError: Lexicon "" not found ... There should be no uncaught exception, but a friendly message that well - you have to create and choose a ZCTextIndex Lexicon first.

For me, the "LookupError" together with the note ("create lexicon first") is sufficient: adding indexes is an advanced operation; people doing that likely can read tracebacks.