--no_symlinks Error

[アレルギー万年]

Hi there, 

I tried to run the trinity v2.15.1 with only one RNA seq data. (paired end reads. total 2 data files) on google Colabo.

!Trinity --seqType fq --max_memory 50G --left DRR******_1.fastq  --right DRR******_2.fastq --CPU 6 --no_salmon --no_symlinks

 But, I received the error massage below. 

ERROR, don't recognize parameter: --no_symlinks Please review usage info for accepted parameters.

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Please tell me what I should do the next to solve this.

Thank you very  much.