Invalid ENV var

bundle exec foreman run rake db:migrate
FATAL: Invalid ENV var: APP_NAME=myawesomeapp
FATAL: Invalid ENV var: CROWDTILT_SANDBOX_KEY=crowdtiltsandboxkey
FATAL: Invalid ENV var: CROWDTILT_SANDBOX_SECRET=crowdtiltsandboxsecret
FATAL: Invalid ENV var: AWS_BUCKET=awsbucket
FATAL: Invalid ENV var: AWS_ACCESS_KEY_ID=awsaccesskey
FATAL: Invalid ENV var: AWS_SECRET_ACCESS_KEY=awssecretaccesskey
FATAL: Invalid ENV var: MAILGUN_DOMAIN=myawesomeapp.mailgun.org
FATAL: Invalid ENV var: MAILGUN_PASSWORD=smtp_pass
FATAL: Invalid ENV var: MAILGUN_USERNAME=postmaster@myawesomeapp.mailgun.org
FATAL: Invalid ENV var: MAILGUN_API_KEY=key-mailgunapikey
FATAL: Invalid ENV var: SECRET_TOKEN=secrettoken
FATAL: Invalid ENV var: DEVISE_SECRET_KEY=secrettoken
FATAL: Make sure you have set the vars in .env and are running this process with foreman

[ravkothari]

i am getting above problem in .env file variables when i run that command:
foreman run rake db:migrate
Please help me ..
Thanks