changes

src/auth/jwt.strategy.ts

@@ -2,7 +2,11 @@ import { PassportStrategy } from "@nestjs/passport";
 import{ExtractJwt,Strategy} from 'passport-jwt'
 
 export class JwtStrategy extends PassportStrategy(Strategy){
+    
     constructor(){
+        if( !process.env.JWT ){
+        throw new Error('JWT_SECRET no está definido en las variables de entorno');
+    }
         super({
             jwtFromRequest:ExtractJwt.fromAuthHeaderAsBearerToken(),
             ignoreExpiration:false,