./tb.simv.daidir is not generated with the -kdb option.

The error message indicates that the simulation executable "tb.simv" was not generated with the "-kdb" option.

The "-kdb" option is used to enable the generation of a debug database file (.db) during the simulation build process. This file is used by debuggers to provide information about the design hierarchy, signals, and variables in the simulation.

To fix the issue, you can try recompiling the simulation executable with the "-kdb" option enabled. This can typically be done by adding "-kdb" to the simulation command or modifying the simulation script.

Alternatively, you can try using a different debug tool that does not require the debug database file.