Error: Corruption: not an sstable (bad magic number)
File: src/pocketmine/level/format/io/leveldb/LevelDB
Line: 433
Type: LevelDBException

Code:
[424] 		$chunk->setGenerated(\true);
[425] 		$chunk->setPopulated(\true);
[426] 		$chunk->setLightPopulated($lightPopulated);
[427]
[428] 		return $chunk;
[429] 	}
[430]
[431] 	protected function writeChunk(Chunk $chunk) : void{
[432] 		$index = LevelDB::chunkIndex($chunk->getX(), $chunk->getZ());
[433] 		$this->db->put($index . self::TAG_VERSION, \chr(self::CURRENT_LEVEL_CHUNK_VERSION));
[434]
[435] 		$subChunks = $chunk->getSubChunks();
[436] 		foreach($subChunks as $y => $subChunk){
[437] 			$key = $index . self::TAG_SUBCHUNK_PREFIX . \chr($y);
[438] 			if($subChunk->isEmpty(\false)){ //MCPE doesn't save light anymore as of 1.1
[439] 				$this->db->delete($key);
[440] 			}else{
[441] 				$this->db->put($key,
[442] 					\chr(self::CURRENT_LEVEL_SUBCHUNK_VERSION) .
[443] 					$subChunk->getBlockIdArray() .