Tokenizer loading process problem

[mitya52]

found some problems with tokenizer loading:

first request to any model causes problem with tokenizer, error looks like this {"detail":"Tokenizer: failed to load tokenizer: EOF while parsing an object at line 6253 column 15"}
we should give path to tokenizer's data with model directly without "template": not all models stored in huggingface (3rd-party gpt model for example)

Failed to load tokenizer: EOF while parsing a value at line 1 column 0 when trying to use completion with wizardcoder/15b, llama2/7b, llama2/13b