Exception in Ideal.variety()

[Georgi Guninski]

sage: set_random_seed(1)
sage: n=100;Kx=PolynomialRing(QQ,'x',n)
sage: for i in range(20):
....: l=[Kx.random_element(degree=1,terms=n) for _ in range(n)]
....: #print("l=",l)
....: try: gb=Ideal(l).variety()
....: except Exception as e: print(" exception",e)
....:
skipping text from `)` error at token `)`
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KeyError
S = groebner(self)
^^^^^^^^^^^^^^
RuntimeError: Error raised calling singular function
exception error in Singular function call 'groebner':
overflow at t^93

[Georgi Guninski]

Simpler testcase:

sage: set_random_seed(1)
sage: n=100;Kx=PolynomialRing(QQ,'x',n)

sage: l=[Kx.random_element(degree=1,terms=n) for _ in range(n)]
sage: Ideal(l).dimension()
0
sage: va=Ideal(l).variety()

skipping text from `)` error at token `)`
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KeyError Traceback (most recent call last)