public key – Error: Script was NOT verified successfully

On bitcoin test network, I create mjLMkkYrbezUoWd77A8amRoiMcjZ9iabPN addres from this public key 038106683f00f3806c13300b34ee20a69e7602a7901bd18cae7dfab8302535a255 and get some test bitcoins to this address. But when I create a transaction, sign it and push it to the network I get this error:

Error validating transaction: Error running script for input 0 referencing 4a4cbc830a78cd3baf39ecb474454e016e840250f3dc80f9e48123beca42069a at 0: Script was NOT verified successfully..

I read some articles about it, some get this error by signing the transaction with root but not child pubkey but I don’t get it because I only have one pubkey. Can someone please tell me what the problem is here?

here is the raw transaction getting the error: