Error Reference Hub
NV1004Compiler
Invalid Function Call
A function or method was invoked with an incorrect number of arguments or incompatible argument types.
Why this error occurs
Passing too few or too many arguments to a function, calling a non-callable object, or passing argument types that fail the parameter signature validation.
Incorrect Code
// incorrect: 'add' expects 2 arguments, but 3 are passed
fn add(a: int, b: int) -> int:
return a + b
let sum = add(10, 20, 30)Corrected Code
// corrected: match expected parameter count and types
fn add(a: int, b: int) -> int:
return a + b
let sum = add(10, 20)
print(sum)Troubleshooting & Remediation
- 1Check the target function definition and count required parameters.
- 2Verify default parameter values if optional arguments are intended.
- 3Use the Language Server (LSP) hover feature in your editor to inspect function signatures.
Relevant CLI Commands
$ nextviper check$ nextviper lsp