Problems with integrating CodeView into an Action Extension

[TangZhongham]

I am using this to build an App for reading codes on iOS. This package works fine for building SwiftUI Views. However, when I am using it to build an Action Extension, this error below occurs. Can you help me with that? Thanks a lot!

Undefined symbols for architecture x86_64:
"nominal type descriptor for CodeViewer.CodeViewer", referenced from:
_symbolic ____y___________y_____y_____GGACy_____y__________y_____SgGGGQo 7SwiftUI4ViewPAAE18navigationBarItems7leading8trailingQrqd___qd_0_tAaBRd__AaBRd_0_r0_lFQO 10CodeViewerAGV AA6HStackV AA6ButtonV AA4TextV AA15ModifiedContentV AA5ImageV AA30_EnvironmentKeyWritingModifierV AA4FontV in EditorView.o
_symbolic ____y_____y___________y_____y_____GGACy_____y__________y_____SgGGGQo_______Qo 7SwiftUI4ViewPAAE5sheet11isPresented9onDismiss7contentQrAA7BindingVySbG_yycSgqd__yctAaBRd__lFQO AcAE18navigationBarItems7leading8trailingQrqd___qd_0_tAaBRd__AaBRd_0_r0_lFQO 10CodeViewerAOV AA6HStackV AA6ButtonV AA4TextV AA15ModifiedContentV AA5ImageV AA30_EnvironmentKeyWritingModifierV AA4FontV 15ActionExtension05ThemeC0V in EditorView.o
"nominal type descriptor for CodeViewer.CodeWebView.Theme", referenced from:
_symbolic _____y_____G 7SwiftUI5StateV 10CodeViewer0D7WebViewC5ThemeO in EditorView.o
"CodeViewer.CodeViewer.init(content: SwiftUI.Binding<Swift.String>, mode: CodeViewer.CodeWebView.Mode, darkTheme: CodeViewer.CodeWebView.Theme, lightTheme: CodeViewer.CodeWebView.Theme, isReadOnly: Swift.Bool, fontSize: Swift.Int, textDidChanged: ((Swift.String) -> ())?) -> CodeViewer.CodeViewer", referenced from:
ActionExtension.EditorView.body.getter : some in EditorView.o
"protocol conformance descriptor for CodeViewer.CodeViewer : SwiftUI.View in CodeViewer", referenced from:
lazy protocol witness table accessor for type CodeViewer.CodeViewer and conformance CodeViewer.CodeViewer : SwiftUI.View in CodeViewer in EditorView.o
"type metadata accessor for CodeViewer.CodeViewer", referenced from:
ActionExtension.EditorView.body.getter : some in EditorView.o
lazy protocol witness table accessor for type CodeViewer.CodeViewer and conformance CodeViewer.CodeViewer : SwiftUI.View in CodeViewer in EditorView.o
outlined destroy of CodeViewer.CodeViewer in EditorView.o
l_get_witness_table qd0__7SwiftUI4ViewHD3_AaBPAAE5sheet11isPresented9onDismiss7contentQrAA7BindingVySbG_yycSgqd__yctAaBRd__lFQOyAcAE18navigationBarItems7leading8trailingQrqd___qd_0_tAaBRd__AaBRd_0_r0_lFQOy10CodeViewerAOV_AA6HStackVyAA6ButtonVyAA4TextVGGATyAA15ModifiedContentVyAA5ImageVAA30_EnvironmentKeyWritingModifierVyAA4FontVSgGGGQo__15ActionExtension05ThemeC0VQo_HO in EditorView.o
"type metadata for CodeViewer.CodeWebView.Theme", referenced from:
property wrapper backing initializer of ActionExtension.EditorView.(theme in _1FD4E17BFA9D43C14FDD2767A1577070) : CodeViewer.CodeWebView.Theme in EditorView.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[helje5]

I don't think I've written an action extension yet. Maybe the extension doesn't provide all required APIs?