test.robot:3:30 ARG03 Undefined argument default, use ${bar}=${EMPTY} instead
   |
 1 | *** Keywords ***
 2 | Keyword with undefined arg
 3 |     [Arguments]    ${foo}    ${bar}=    ${baz}=123
   |                              ^^^^^^^ ARG03
 4 |     No Operation
   |

test.robot:10:10 ARG03 Undefined argument default, use ${baz}=${EMPTY} instead
    |
  8 |     ...  ${foo}
  9 |     ...  ${bar}=123
 10 |     ...  ${baz}=
    |          ^^^^^^^ ARG03
 11 |     ...  ${lorum}=${ipsum}
 12 |     No Operation
    |

test.robot:23:20 ARG03 Undefined argument default, use ${arg}=${EMPTY} instead
    |
 21 |
 22 | Keyword with multiple violations in one line
 23 |     [Arguments]    ${arg}=    ${arg2}=
    |                    ^^^^^^^ ARG03
 24 |     No Operation
    |

test.robot:23:31 ARG03 Undefined argument default, use ${arg2}=${EMPTY} instead
    |
 21 |
 22 | Keyword with multiple violations in one line
 23 |     [Arguments]    ${arg}=    ${arg2}=
    |                               ^^^^^^^^ ARG03
 24 |     No Operation
    |

test.robot:35:27 ARG03 Undefined argument default, use ${bar}=${EMPTY} instead
    |
 33 |
 34 | Keyword with named-only arguments
 35 |     [Arguments]    @{}    ${bar}=    ${foo}=${None}
    |                           ^^^^^^^ ARG03
 36 |     No Operation
    |

Found 5 issues.