ERROR: "ngram_search.c", line 1207: Failed to find DAG node corresponding to </s>

[Mariano Baci]

After some changes in my model I get this error. I saw that someone else has asked this before and the answer was to increase the beam width. Where can I edit it and what value should I write?
Is this?
$DEC_CFG_LANGUAGEWEIGHT = "10";
$DEC_CFG_BEAMWIDTH = "1e-80";
$DEC_CFG_WORDBEAM = "1e-40";
$DEC_CFG_WORDPENALTY = "0.2";