[GRASS-user] v.patch process error: "Process ended with non-zero return code -9. "

[Gra]

I'm running v.patch on a large data set.

I'm connected to postgresql.

here is the error:

grass.exceptions.CalledModuleError: Module run None ['v.patch', '--o',
'-e',
'input=fraf10___________nw,fraf11___________nw,fraf12___________nw,fraf13___________nw,fraf14___________nw,fraf15___________nw,fraf16___________nw,fraf17___________nw,fraf18___________nw,fraf19___________nw,fraf20___________nw,fraf21___________nw,fraf22___________nw,fraf23___________nw,fraf24___________nw',
'output=fraf_patch']

ended with error
Process ended with non-zero return code -9. See errors in the (error)
output.

could you tell me how to solve the problem or which error is "-9"

many thanks

Grazia
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