Syntax error: Expected keyword AS but got "(" - google-bigquery

Question

I have been getting the error message when trying to write the CTE SQL code.
WITH PopulationVancine (Date, Location, population, continent, new_vacinations, RollingPeopleVaccinated)
AS (
SELECT Death.date,Death.location, Death.population, Death.continent, vacine.new_vaccinations, SUM (vacine.new_vaccinations) OVER (PARTITION BY Death.location order by Death.location, Death.date) AS RollingPeopleVaccinated
FROM `my-data-project-96387.PortfolioProjectSamp.CovidDeath` as Death
INNER JOIN `my-data-project-96387.PortfolioProjectSamp.CovidVacination` as vacine
ON Death.location = vacine.location
AND Death.date = vacine.date
WHERE Death.continent is not null
)
Select *
From PopulationVancine
Please I will need your assist as regards this error message.

Answer 1

Working on the same project and got this error too as opposed to the script. I removed the (Date, Location, population, continent, new_vacinations, RollingPeopleVaccinated) and it worked with same results as script.Try this:
WITH PopulationVancine
AS (
SELECT Death.date,Death.location, Death.population, Death.continent, vacine.new_vaccinations, SUM (vacine.new_vaccinations) OVER (PARTITION BY Death.location order by Death.location, Death.date) AS RollingPeopleVaccinated
FROM `my-data-project-96387.PortfolioProjectSamp.CovidDeath` as Death
INNER JOIN `my-data-project-96387.PortfolioProjectSamp.CovidVacination` as vacine
ON Death.location = vacine.location
AND Death.date = vacine.date
WHERE Death.continent is not null
)
Select *
From PopulationVancine

Answer 2

Emmanuel Korli's answer worked brilliantly. Maybe it's something specific for Big Query or Alex's work, but the query does work without the first
"(Date, Location, population, continent, new_vacinations, RollingPeopleVaccinated)"
In my case it looks like this:
WITH PopVsVac
AS
(
SELECT
dea.continent, dea.location, dea.date, dea.population, vac.new_vaccinations,
SUM(vac.new_vaccinations) OVER (PARTITION BY dea.location ORDER BY dea.location, dea.date) AS rollout_vaccines
FROM
COVID.covid_deaths AS dea
JOIN
COVID.covid_vaccinations AS vac
on dea.location = vac.location
and dea.date = vac.date
WHERE
dea.continent is not null
ORDER BY
2, 3
)
SELECT
*, (rollout_vaccines/population)*100
FROM
PopVsVac