CssSyntaxError unknown word

Photoshop UXP Plugin API
1

Got this strange exception. It’s unclear where there error happened and which word exactly is unknown. Any tips?

{
    "name": "CssSyntaxError",
    "reason": "Unknown word",
    "file": "/inline",
    "source": "1",
    "line": 1,
    "column": 1,
    "message": "Error while parsing 'inline' CSS style sheet.\n/inline:1:1: Unknown word",
    "input": {
        "line": 1,
        "column": 1,
        "source": "1",
        "file": "/inline"
    }
}
2

It’s useful to know what you did to get the error. Anyway, quick search says it happens on package build and most likely the reason is related to loaders

3

loaders didn’t change and stay same since start of the project

4

Just to report that issue still happens on latest versions.

column: 1
file: "/inline"
input: {line: 1, column: 1, source: "1", file: "/inline"}
line: 1
message: "Error while parsing 'inline' CSS style sheet.\n/inline:1:1: Unknown word"
name: "CssSyntaxError"
reason: "Unknown word"
source: "1"
stack: "CssSyntaxError: Error while parsing 'inline' CSS style sheet.
/inline:1:1: Unknown word
    at e.error (uxp://uxp-internal/domjs_scripts.js:2:202997)
    at e.unknownWord (uxp://uxp-internal/domjs_scripts.js:2:389868)
    at e.other (uxp://uxp-internal/domjs_scripts.js:2:385258)
    at e.parse (uxp://uxp-internal/domjs_scripts.js:2:384213)
    at t.default (uxp://uxp-internal/domjs_scripts.js:2:132747)
    at new e (uxp://uxp-internal/domjs_scripts.js:2:217447)
    at e.process (uxp://uxp-internal/domjs_scripts.js:2:215540)
    at h (uxp://uxp-internal/domjs_scripts.js:2:196909)
    at parseCSSDeclaration (uxp://uxp-internal/domjs_scripts.js:2:197284)
    at g._getCssProperties (uxp://uxp-internal/devtools_scripts.js:1:30074)"