Vim under the Express Jade space problem: expected "indent", but got "newline"

Error: /home/y/my_note/nodejs/myapp/views/index.jade:20
    18|           -list=[{name:‘zhangsan‘,age:25,email:‘[email protected]‘}]
    19|           -each l in list
  > 20|           tr
    21|               td=l.name
    22|               td=l.age
    23|               td=l.email

expected "indent", but got "newline"
    at Parser.expect (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:175:13)
    at Parser.block (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:702:10)
    at Parser.parseEach (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:439:23)
    at Parser.parseExpr (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:233:21)
    at Parser.block (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:707:25)
    at Parser.tag (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:816:24)
    at Parser.parseTag (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:737:17)
    at Parser.parseExpr (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:211:21)
    at Parser.block (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:707:25)
    at Parser.tag (/home/y/my_note/nodejs/myapp/node_modules/jade/lib/parser.js:816:24)

In line 20, you need an indent and modify it to the following:

 
 17       tbody
 18           -list=[{name:‘zhangsan‘,age:25,email:‘[email protected]‘}]
 19           -each l in list
 20             tr
 21               td= l.name
 22               td= l.age
 23               td= l.email

Vim under the Express Jade space problem: expected "indent", but got "newline"