I attempted to import a flutter codelab by using the git project import with url: https://github.com/material-components/material-components-flutter-codelabs.git

It fails, with no useful error message. However, this is the stack from the js console:
Error: Internal error encountered.
at iM.f (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:720:10)
at new iM (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:845:332)
at .MN.<anonymous> (https://www.gstatic.com//mss/boq-monospace//js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTSg/m=base:892:163)
at IM (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:855:206)
at l.dispatchEvent (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:853:343)
at QN (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:886:284)
at SN (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:888:326)
at .MN.Zl (https://www.gstatic.com//mss/boq-monospace//js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTSg/m=base:887:430)
at .MN.Tb (https://www.gstatic.com//mss/boq-monospace//js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTSg/m=base:887:394)
at XMLHttpRequest.Hd (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:727:416)
at t.Ti (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:715:49)
at Object.bj (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:342:111)
at t.Ti (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:715:9)
at p.eq (https://www.gstatic.com/_/mss/boq-monospace/_/js/k=boq-monospace.MonospaceNgUI.en.taNhyicQfx4.es5.O/d=1/excm=base/ed=1/dg=0/wt=2/ujg=1/rs=AP-1MC6DV8OE0pFyUXjT0KOqbeh54rTS_g/m=base:708:19)
at u.Ti as Wb