I created a raw transaction with an older electrum version (1.7x or so). It verifies correctly on "https://coinb.in/#verify" but I cannot broadcast it  anywhere. I always get error messages like these:

https://coinb.in/#broadcast
--> the transaction was rejected by network rules. scriptsig-not-pushonly

https://blockstream.info/tx/push
--> RPC error

https://www.blockchain.com/de/explorer/assets/btc/broadcast-transaction
--> "Code: -26, Error: scriptsig-not-pushonly"

https://www.viabtc.com/tools/broadcast
--> Raw transaction send failed

https://live.blockcypher.com/btc/pushtx/
--> Error validating transaction: Rejected script for input 0 referencing ......

https://blockchair.com/broadcast
--> An error has occurred, please verify the transaction hash and selected network and try again.

https://bitaps.com/broadcast
--> Mempool accept test failed: scriptsig-not-pushonly