Fix: Prefix removal was wrong

Author: hoh

src/aleph/vm/orchestrator/views/operator.py

@@ -66,8 +66,7 @@ class SignedPubKeyHeader(BaseModel):
     @validator("signature")
     def signature_must_be_hex(cls, v: bytes) -> bytes:
         """Convert the signature from hexadecimal to bytes"""
-        v = v.strip(b"0x")
-        return bytes.fromhex(v.decode())
+        return bytes.fromhex(v.removeprefix(b"0x").decode())
 
     @validator("payload")
     def payload_must_be_hex(cls, v: bytes) -> bytes:
@@ -110,8 +109,12 @@ class SignedOperation(BaseModel):
     @validator("signature")
     def signature_must_be_hex(cls, v) -> bytes:
         """Convert the signature from hexadecimal to bytes"""
-        v = v.strip(b"0x")
-        return bytes.fromhex(v.decode())
+        try:
+            return bytes.fromhex(v.removeprefix(b"0x").decode())
+        except pydantic.ValidationError as error:
+            print(v)
+            logger.warning(v)
+            raise error
 
     @validator("payload")
     def payload_must_be_hex(cls, v) -> bytes: