Error(s) in re-building vignettes:
--- re-building 'WaterML-Tutorial.Rmd' using rmarkdown
Quitting from lines 60-62 (WaterML-Tutorial.Rmd) 
Error: processing vignette 'WaterML-Tutorial.Rmd' failed with diagnostics:
1: Opening and ending tag mismatch: br line 137 and span
2: Opening and ending tag mismatch: span line 136 and li
3: Opening and ending tag mismatch: br line 145 and span
4: Opening and ending tag mismatch: span line 144 and li
5: Opening and ending tag mismatch: br line 153 and span
6: Opening and ending tag mismatch: span line 152 and li
7: Opening and ending tag mismatch: br line 161 and span
8: Opening and ending tag mismatch: span line 160 and li
9: Opening and ending tag mismatch: br line 169 and span
10: Opening and ending tag mismatch: span line 168 and li
11: Opening and ending tag mismatch: br line 177 and span
12: Opening and ending tag mismatch: span line 176 and li
13: Opening and ending tag mismatch: br line 185 and span
14: Opening and ending tag mismatch: span line 184 and li
15: Opening and ending tag mismatch: br line 193 and span
16: Opening and ending tag mismatch: span line 192 and li
17: Opening and ending tag mismatch: br line 201 and span
18: Opening and ending tag mismatch: span line 200 and li
19: Opening and ending tag mismatch: br line 209 and span
20: Opening and ending tag mismatch: span line 208 and li
21: Opening and ending tag mismatch: br line 217 and span
22: Opening and ending tag mismatch: span line 216 and li
23: Opening and ending tag mismatch: br line 225 and span
24: Opening and ending tag mismatch: span line 224 and li
25: Opening and ending tag mismatch: br line 233 and span
26: Opening and ending tag mismatch: span line 232 and li
27: Opening and ending tag mismatch: li line 230 and ul
28: Opening and ending tag mismatch: li line 222 and span
29: Opening and ending tag mismatch: li line 214 and div
30: Opening and ending tag mismatch: li line 206 and body
31: Opening and ending tag mismatch: li line 198 and html
32: Premature end of data in tag li line 190
33: Premature end of data in tag li line 182
34: Premature end of data in tag li line 174
35: Premature end of data in tag li line 166
36: Premature end of data in tag li line 158
37: Premature end of data in tag li line 150
38: Premature end of data in tag li line 142
39: Premature end of data in tag li line 134
40: Premature end of data in tag ul line 132
41: Premature end of data in tag span line 129
42: Premature end of data in tag br line 127
43: Premature end of data in tag div line 124
44: Premature end of data in tag body line 123
45: Premature end of data in tag html line 3

--- failed re-building 'WaterML-Tutorial.Rmd'

SUMMARY: processing the following file failed:
  'WaterML-Tutorial.Rmd'

Error: Vignette re-building failed.
Execution halted