The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1387
Hash: 3261fc178e3d2828efd15ca483a7bfaeb916b45cc266503576102a4cf9ad1d17
Previous block: 651c08cb781067264754c3cdee3d27c4e2846b7e15c301debdcc1cb38da57553
Next block: 6c6778075cfb838c3a8507c2e1cb1eee3929266be337ee6fdc7d591cbf44196c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697639
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 1fd979cd2b331d0b7da0b8d914c25900fb3e3d89b0df1fb85f9560bf20229439
Median time: 1718697638
Difficulty: 4.656542373906925e-10
Confirmations: 857
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ad8
Bits: 207fffff