Terminal problem

What does it means? What should I do?

Code (Text):

bash: export: `/home/oguz/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games': not a valid identifier
bash: export: `=': not a valid identifier
bash: export: `//bin/:/home/oguz/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games': not a valid identifier

 

When do you get this message,
It seems like a failure in environment variable intialization.