It seems your model has some flow originating in a Text element and terminating in a Number element.
Please validate your model to see if and where such a flow exists, and fix it.
See http://www.tersus.com/#Id=1243 for more details oin validation (it's also discussed in several stages of the step by step tutorial @ http://www.tersus.com/#Id=2644).
Regards,
David
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