Cannot read properties of null (reading 'distanceTo')

[theblazehen]

Before submitting an issue, make sure you read the FAQ.md

Briefly describe your issue

I'm getting an error of

return block.name.endsWith("_log") && block.position.distanceTo(bot.entity.position) < 32;
 Cannot read properties of null (reading 'distanceTo')

Please provide your python, nodejs, Minecraft, and Fabric versions here

Python: 3.10.6
Nodejs: v20.2.0
Minecraft: 1.19
Fabric: 0.14.18

[If applicable] Please provide the Minefalyer and Minecraft logs, you can find the log under logs folder

mineflayer.log

[If applicable] Please provide the GPT conversations that are printed each round.

****Recorder message: 3700 ticks have elapsed****
****Recorder message: 34 iteration passed****
Critic Agent: Error occurs Your code:4
return block.name.endsWith("_log") && block.position.distanceTo(bot.entity.position) < 32;
 Cannot read properties of null (reading 'distanceTo')

****Action Agent human message****
Code from the last round:
async function mineWoodLog(bot) {
  const woodLog = bot.findBlock({
    matching: block => {
      return block.name.endsWith("_log") && block.position.distanceTo(bot.entity.position) < 32;
    }
  });
  if (woodLog) {
    await mineBlock(bot, woodLog.name);
  } else {
    await bot.chat("No wood log found nearby.");
  }
}

async function mineOneWoodLog(bot) {
  await mineWoodLog(bot);
}

Execution error:
Your code:4
return block.name.endsWith("_log") && block.position.distanceTo(bot.entity.position) < 32;
 Cannot read properties of null (reading 'distanceTo')


Chat log: None

Biome: forest

Time: midnight

Nearby blocks: dirt, grass_block, oak_log, grass, stone, oak_leaves

Nearby entities (nearest to farthest): None

Health: 20.0/20

Hunger: 20.0/20

Position: x=1.7, y=77.0, z=-3.6

Equipment: [None, None, None, None, None, None]

Inventory (0/36): Empty

Chests: None

Task: Mine 1 wood log

Context: You can mine one of oak, birch, spruce, jungle, acacia, dark oak, or mangrove logs.

Critique: None


****Action Agent ai message****
Explain: The error occurs because the `bot.findBlock` function returns `null` when no matching block is found. The code tries to access the `position` property of a `null` value, causing the error.

Plan:
1) Modify the `mineWoodLog` function to check if a wood log is found before accessing its properties.
2) Call the `mineWoodLog` function to mine one wood log.

Code:
```javascript
async function mineWoodLog(bot) {
  const woodLog = bot.findBlock({
    matching: block => {
      return block && block.name.endsWith("_log") && block.position.distanceTo(bot.entity.position) < 32;
    }
  });
  if (woodLog) {
    await mineBlock(bot, woodLog.name);
  } else {
    await bot.chat("No wood log found nearby.");
  }
}

async function mineOneWoodLog(bot) {
  await mineWoodLog(bot);
}

[theblazehen]

I should probably read the logs before posting an issue...