Do not use this source. A generic source name of “Google drive” is not allowed. YOUR source needs to be specific to YOU. The name of a website can only be used as a source name if the whole website belongs to you. If you are a user of a website belonging to somebody else, then YOUR source needs to be “Profile name on website” or “shopowner name on website”.

More information about how to add patterns can be found on these pages:
For free patterns https://www.ravelry.com/wiki/pages/FreeRavPatternDownloads
For paid patterns https://www.ravelry.com/wiki/pages/RavelryPatternStore

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