The scenario indicates a breakdown in communication between the project team and the project sponsor. The sponsor was unaware of the issues and could not provide guidance on the next steps, highlighting a deficiency in the project's communication processes.

According to the CompTIA Project+ PK0-005 exam objectives, under Domain 1.8: Compare and contrast communication management concepts, it is essential to:

Develop communication platforms/modalities

Manage project communication

Control project communication

One of the key aspects of controlling project communication is:

Revising the communication plan

The communication plan outlines how information is disseminated among stakeholders, including the frequency, methods, and responsible parties. If a sponsor is uninformed about project issues, it suggests that the communication plan is either inadequate or not being followed correctly.

The CompTIA Project+ PK0-005 Certification Study Guide further elaborates on this by stating that:

The communication plan should be reviewed and updated regularly to ensure effective information flow among stakeholders.

In this case, revising the communication plan would address the communication gaps, ensuring that the sponsor and other stakeholders receive timely and accurate information about project issues and developments.