handle missing failure case to URL extraction

[endorama]

The current code check to determine a valid URL didn't take into
account this particular case which resulted in a panic at runtime.

[elasticmachine]

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• Start Time: 2022-10-31T15:27:16.161+0000

• Duration: 3 min 59 sec

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Test	Results
Failed	0
Passed	72
Skipped	0
Total	72

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