Angular Library Compile Time Error "Invariant violated: No format-path or format"

I have an Angular 11 project that is trying to integrate SpreadJS Designer, but is failing during the ngcc step Compiling @grapecity/spread-sheets-designer-angular : esm2015 as esm2015 with the exception:

Error on worker #3: Error: Invariant violated: No format-path or format for /path/to/my/project/node_modules/@grapecity/spread-sheets-designer-angular : main (formatPath: bundles/grapecity-spread-sheets-designer-angular.umd.js | format: undefined)

How do I further diagnose and fix this problem?

Here is the output of npx ng version for my project:

Angular CLI: 11.0.2
Node: 14.15.1
OS: linux x64

Angular: 11.0.2
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1100.2
@angular-devkit/build-angular   0.1100.2
@angular-devkit/core            11.0.2
@angular-devkit/schematics      11.0.2
@angular/cdk                    11.0.1
@angular/material               11.0.1
@schematics/angular             11.0.2
@schematics/update              0.1100.2
rxjs                            6.5.3
typescript                      4.0.5

Then rm -rf node_modules && npm install; npm ls | grep grapecity gives this output:

├─┬ @grapecity/spread-excelio@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped
├── @grapecity/spread-sheets@14.0.3
├─┬ @grapecity/spread-sheets-angular@14.0.3
│ ├── @grapecity/spread-sheets@14.0.3 deduped
├─┬ @grapecity/spread-sheets-barcode@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped
├─┬ @grapecity/spread-sheets-charts@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped
├── @grapecity/spread-sheets-designer@14.0.3
├─┬ @grapecity/spread-sheets-designer-angular@14.0.3
├── @grapecity/spread-sheets-designer-resources-en@14.0.3
├─┬ @grapecity/spread-sheets-languagepackages@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped
├─┬ @grapecity/spread-sheets-pdf@14.0.3
│ ├── @grapecity/spread-sheets@14.0.3 deduped
│ └── @grapecity/spread-sheets-print@14.0.3 deduped
├─┬ @grapecity/spread-sheets-pivot-addon@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped
├─┬ @grapecity/spread-sheets-pivots@14.0.0
│ └── @grapecity/spread-sheets@14.0.0
├─┬ @grapecity/spread-sheets-print@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped
├─┬ @grapecity/spread-sheets-resources-ja@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped
├─┬ @grapecity/spread-sheets-shapes@14.0.3
│ └── @grapecity/spread-sheets@14.0.3 deduped