Error using applications ESS

Dear Experts.

I have a problema with applications ESS(Appraisal Document, Travel).

We are usign ECC 6.0 with ehp 6. Our portal is 7.4

For the applications of Personal Information, the system show a screen Blue,

I have created a trace using the t.code ST01 for authorizations, however the log not show problems .

What is a posible cause for this errror?

Thanks-

Regards