Duplicate URL with tRPC mutation procedure

Question

I created a tRPC mutation to verify an email on my database called verificateEmailProcedure. I have a middleware that runs on every route of my app and it was blocking this procedure. Every route in my app is protected except a few and verificateEmailProcedure is one that does not need authentication. Upon further inspection I realized that I was getting blocked because the request was being made like this:

POST /api/trpc/verificateEmailProcedure,verificateEmailProcedure?batch=1 200 in 66ms

This is the declaration:

verificateEmailProcedure: publicProcedure
    .input(z.object({ token: z.string() }))
    .mutation(async (opts) => {
      const { token } = opts.input;
      const vt = await getVerificationTokenByToken(token);

      if (!vt) {
        throw new TRPCError({
          code: "UNAUTHORIZED",
          message: "Token does not exists",
        });
      }

      if (new Date().getTime() > vt.expires.getTime()) {
        throw new TRPCError({
          code: "UNAUTHORIZED",
          message: "Token has expired",
        });
      }

      const user = await getUserByEmail(vt.email);
      if (!user) {
        throw new TRPCError({
          code: "UNAUTHORIZED",
          message: "Email does not exists",
        });
      }
      await validateEmail(user.id, vt.email);
      await deleteToken(vt.id);
      return "Email verified";
    }),

Somehow tRPC knows which procedure to call even if the URL is like this so everything works when I deactivate the middleware. Any idea why the procedure repeats itself in the URL?