Failed to construct

[cd-ccmb]

Searched 68096 bases in 10 sequences
add_edge() takes exactly 3 arguments (4 given)
FAILED to construct
add_edge() takes exactly 3 arguments (4 given)
FAILED to construct
add_edge() takes exactly 3 arguments (4 given)
FAILED to construct
add_edge() takes exactly 3 arguments (4 given)
FAILED to construct

The following lines are reported and then the process stops.

[manuelsmendoza]

I have a lot of FAILED to construct on the log file... what does it mean exactly? cause it's generated output with the final cluster sequences