Cadence Warning & errors! [Please Help me to understand

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cdscd negative cadence warning

Warning from spectre during initial setup.
I12.M0: `Cdscd' = -28.83e-06 is negative.
I8.M0: `Cdscd' = -28.83e-06 is negative.
I7.M0: `Cdscd' = -28.83e-06 is negative.
I36.M0: `Cdscd' = -28.83e-06 is negative.
Further occurrences of this warning will be suppressed.
I34.M0: `Cdscd' = -28.83e-06 is negative.
Further occurrences of this warning will be suppressed.

Fatal error found by spectre during topology check.
The following branches form a loop of rigid branches (shorts) when added to
the circuit:
V2 (from Vic to 0)
V4 (from AGG to 0)
 

cadence warning

this tpe of error through spectre may come due to process technology parameters variations check your process technology file and model.scs file whatever you r making is not according to the particular process technology parameter.
 

cdscd negative

hi ,
i m making a asynchronous fifo in cadence .at the time of simulation this is giving the same error. if it is not according to the particular process technology parameter then what should i do for this .
plz reply as soon as possible .i will be remain very thankful to u.
 

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