Could not determine environment name from file .github/locks/build_linux-64_lab4.0.conda.lock

Error: YAMLException: end of the stream or a document separator is expected (27:1) 24 | # - types-pyyaml 25 | # - types-ujson 26 | 27 | @explicit ------^ 28 | https://conda.anaconda.org/cond ... 29 | https://conda.anaconda.org/cond ...