rake db:migrate error

gistfile1.txt

==  CreateCustomers: migrating ================================================
-- create_table(:customers)
rake aborted!
An error has occurred, this and all later migrations canceled:

SQLite3::SQLException: table "customers" already exists: CREATE TABLE "customers" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "name" varchar(255), "email" varchar(255), "customer_number" varchar(255), "contact_person" varchar(255), "street" varchar(255), "zip_code" integer, "location" varchar(255), "country" varchar(255), "created_at" datetime, "updated_at" datetime)