output 'envpool/mujoco/assets_gym' of //envpool/mujoco:gen_mujoco_gym_xml is a directory; dependency checking of directories is unsound

[mhming]

how to slove this error?

bazel build //envpool/mujoco: --config=debug*

`

Execution platform: @@local_config_platform//:host

ERROR: /home/padroid/software/github/envpool/envpool/mujoco/BUILD:20:8: output 'envpool/mujoco/assets_gym' of //envpool/mujoco:gen_mujoco_gym_xml is a directory; dependency checking of directories is unsound
ERROR: /home/padroid/software/github/envpool/envpool/mujoco/BUILD:20:8: Executing genrule //envpool/mujoco:gen_mujoco_gym_xml failed: not all outputs were created or valid
INFO: Repository rules_cc instantiated at:
/DEFAULT.WORKSPACE.SUFFIX:50:6: in
/home/mhming/.cache/bazel/_bazel_mhming/e11533e5333fe8447db4df454508db0a/external/bazel_tools/tools/build_defs/repo/utils.bzl:240:18: in maybe
Repository rule http_archive defined at:
/home/mhming/.cache/bazel/_bazel_mhming/e11533e5333fe8447db4df454508db0a/external/bazel_tools/tools/build_defs/repo/http.bzl:381:31: in
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 1.092s, Critical Path: 0.01s
INFO: 3 processes: 2 internal, 1 linux-sandbox.
ERROR: Build did NOT complete successfully
FAILED:
Fetching repository @@local_jdk; starting

`