Error in wordtovec

Dear I am getting an error when I am executing the code in python3, code is given below
from gensim.models import word2vec
w2vec = get_word2vec(
    MySentences(
        df_train['Text'].values, 
        df_val['Text'].values
    ),
    'w2vmodel'
)
Error is:
w2vmodel not found. training model