The method generateClient() does not exist on Ticaje\AConnector\Interfaces\ClientInterface. It seems like you code against a sub-type of Ticaje\AConnector\Interfaces\ClientInterface such as Ticaje\AConnector\Gateway\Client\Rest or Ticaje\AConnector\Gateway\Client\Soap or Ticaje\AConnector\Gateway\Client\Rest or Ticaje\AConnector\Gateway\Client\Soap.
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Ignorable by Annotation
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If this is a false-positive, you can also ignore this issue in your code via the ignore-call annotation