abaqus出现错误，老是解决不了求指教

Alfargo

Error in job Job-2: THE SUM OF INITIAL PRESSUE AND ELASTIC TENSILE STRENGTH FOR THE POROUS ELASTIC MATERIAL IN ELEMENT 1 INSTANCE SOIL-1 MUST BE POSITIVE.
Error in job Job-2: DEGREE OF FREEDOM 8 AND AT LEAST ONE OF DEGREES OF FREEDOM 1 THRU 6 MUST BE ACTIVE IN THE MODEL FOR *SOILS. CHECK THE PROCEDURE AND ELEMENT TYPES USED IN THIS MODEL.
老是出现这种问题，求高手指教一下。。。。。