nginx代理后刷新显示404

1
    server {
2          listen   1554;
3          server_name 114.115.170.119;
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5
6          location / {
7              root    "/data/tzjk/front";
8              index  index.html index.htm;
9              try_files $uri $uri/ /index.html;
10          }
11          location /health/{
12              #proxy_pass  http://192.168.100.31:8086/tr/;
13              proxy_pass  http://114.115.170.119:1553/health/;
14          }
15          location /dmm_cas/ {
16              proxy_pass  http://114.115.170.119:1550/dmm_cas/;
17          }
18          error_page   500 502 503 504  /50x.html;
19          location = /50x.html {
20              root   html;
21          }
22      }
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