ERROR: recipes/vcboost/meta.yaml:0: linter_failure: An unexpected exception was raised during linting

[oranges7]

Hi,
File "/opt/mambaforge/envs/bioconda/lib/python3.8/site-packages/ruamel/yaml/parser.py", line 804, in move_token_comment
token.move_old_comment(self.scanner.peek_token() if nt is None else nt, empty=empty)
File "/opt/mambaforge/envs/bioconda/lib/python3.8/site-packages/ruamel/yaml/scanner.py", line 1743, in peek_token
self._gather_comments()
File "/opt/mambaforge/envs/bioconda/lib/python3.8/site-packages/ruamel/yaml/scanner.py", line 1770, in _gather_comments
self.fetch_more_tokens()
File "/opt/mambaforge/envs/bioconda/lib/python3.8/site-packages/ruamel/yaml/scanner.py", line 276, in fetch_more_tokens
return self.fetch_value()
File "/opt/mambaforge/envs/bioconda/lib/python3.8/site-packages/ruamel/yaml/scanner.py", line 626, in fetch_value
raise ScannerError(
ruamel.yaml.scanner.ScannerError: mapping values are not allowed here
in "", line 2, column 8:
package:
^ (line: 2)
But my code is as follows
{% set version = "1.0.0" %}

package:
name: vcboost
version: {{ version }}

source:
...