ID:177003 Fitter encountered congestion in the clock network while routing from <src> to <dst>

CAUSE: The Fitter encountered congestion while trying to connect the clock driver to its fanouts.

ACTION: If the clock driver is locked to a specific location, try unlocking it to allow the Fitter to try other locations in different regions. If the driver is locked to a specific clock region, try locking it in another region, in which the clock network may be less congested. Otherwise, attempt to lower the clock network usage in your design, either by using fewer clocks, or by using smaller clocks instead of larger ones (for example, using regional clocks instead of global ones where possible).