Revisited this useful tool and find it's not functioning

[thistleknot]

fred$series.search("Population")
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 38
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 136
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 139
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 151
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 189
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 192
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 227
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 237
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 348
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 384
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 391
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 394
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 402
Unescaped '<' not allowed in attributes values
attributes construct error
Couldn't find end of Start Tag series line 425
Opening and ending tag mismatch: a9 line 427 and seriess
Premature end of data in tag c2 line 427
Premature end of data in tag a9 line 404
Premature end of data in tag c2 line 404
Premature end of data in tag a9 line 396
Premature end of data in tag c2 line 396
Premature end of data in tag a9 line 393
Premature end of data in tag c2 line 393
Premature end of data in tag a9 line 386
Premature end of data in tag c2 line 386
Premature end of data in tag a9 line 350
Premature end of data in tag c2 line 350
Premature end of data in tag a9 line 239
Premature end of data in tag c2 line 239
Premature end of data in tag a9 line 229
Premature end of data in tag c2 line 229
Premature end of data in tag a9 line 194
Premature end of data in tag c2 line 194
Premature end of data in tag a9 line 191
Premature end of data in tag c2 line 191
Premature end of data in tag a9 line 153
Premature end of data in tag c2 line 153
Premature end of data in tag a9 line 141
Premature end of data in tag c2 line 141
Premature end of data in tag a9 line 138
Premature end of data in tag c2 line 138
Premature end of data in tag a9 line 40
Premature end of data in tag c2 line 40
Premature end of data in tag seriess line 2
Error: 1: Unescaped '<' not allowed in attributes values
2: attributes construct error
3: Couldn't find end of Start Tag series line 38
4: Unescaped '<' not allowed in attributes values
5: attributes construct error
6: Couldn't find end of Start Tag series line 136
7: Unescaped '<' not allowed in attributes values
8: attributes construct error
9: Couldn't find end of Start Tag series line 139
10: Unescaped '<' not allowed in attributes values
11: attributes construct error
12: Couldn't find end of Start Tag series line 151
13: Unescaped '<' not allowed in attributes values
14: attributes construct error
15: Couldn't find end of Start Tag series line 189
16: Unescaped '<' not allowed in attributes values
17: attributes construct error
18: Couldn't find end of Start Tag series line 192
19: Unescaped '<' not allowed in attributes values
20: attributes construct error
21: Couldn't find end of Start Tag series line 227
22: Unescaped '<' not allowed in attributes values
23: attributes const