Question: Cylindrical Algebraic Decompose error

Does anyone here uses SemiAlgebraic or CylindricalAlgebraicDecompose commands often?

The following error (see file below) was not caused by a typo (with smaller polynomials, I do not get them). The system of polynomial inequalities is generated by a code so again there are no typos. Would any one know what this error means? Maple website has no information on it.

Error, (in RegularChains:-SemiAlgebraicSetTools:-CylindricalAlgebraicDecompose) error in TRDisolate_real_zeros in univariate case

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