I cant create a index

I have installed the Trex

Trex instance is green in SAPmmc

must i configure some parameter in portal??

The error creating index:

Index could not be created; creating index failed: no error (Errorcode 0)

And i can´t see the trex monitor:

Runtime Error

An exception occured while processing the request.

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Additional information: null

Exception ID = 502d4229-3dbf-2910-34a6-8dcd34007dcb

ANy idea??