I am getting Killed

2023-11-15T12:55:38.594Z ACTOR: Pulling Docker image of build pC2UCjbFN1XUrUq53 from repository.
2023-11-15T12:56:01.109Z ACTOR: Creating Docker container.
2023-11-15T12:56:01.685Z ACTOR: Starting Docker container.
2023-11-15T12:56:04.422Z INFO System info {"apifyVersion":"3.1.12","apifyClientVersion":"2.8.2","crawleeVersion":"3.5.8","osType":"Linux","nodeVersion":"v16.20.2"}
2023-11-15T12:56:04.549Z Killed
2023-11-15T12:56:05.403Z ACTOR: Run exited with a non-zero exit code and was restarted.
2023-11-15T12:56:05.481Z ACTOR: Pulling Docker image of build pC2UCjbFN1XUrUq53 from repository.
2023-11-15T12:56:05.555Z ACTOR: Creating Docker container.
2023-11-15T12:56:05.607Z ACTOR: Starting Docker container.
2023-11-15T12:56:07.550Z INFO System info {"apifyVersion":"3.1.12","apifyClientVersion":"2.8.2","crawleeVersion":"3.5.8","osType":"Linux","nodeVersion":"v16.20.2"}
2023-11-15T12:56:07.635Z Killed
2023-11-15T12:56:08.593Z ACTOR: Run exited with a non-zero exit code and was restarted.
2023-11-15T12:56:08.755Z ACTOR: Pulling Docker image of build pC2UCjbFN1XUrUq53 from repository.
2023-11-15T12:56:08.757Z ACTOR: Creating Docker container.
2023-11-15T12:56:08.977Z ACTOR: Starting Docker container.
2023-11-15T12:56:11.691Z INFO System info {"apifyVersion":"3.1.12","apifyClientVersion":"2.8.2","crawleeVersion":"3.5.8","osType":"Linux","nodeVersion":"v16.20.2"}
2023-11-15T12:56:11.776Z Killed
2023-11-15T12:56:11.995Z ACTOR: The Actor run was aborted by the user.


why and what are the reasons for this?