Cannot open any of xxx.wtf-calls file

[motek80]

Progress bar stuck infinetly, inside console I have error "Cannot read property 'id' of undefined"

wtf_ui_js_compiled.js:265 Uncaught TypeError: Cannot read property 'id' of undefinedHk @ wtf_ui_js_compiled.js:265h.rj @ wtf_ui_js_compiled.js:584c.onload @ wtf_ui_js_compiled.js:300FileReader (async)h.Tg @ wtf_ui_js_compiled.js:300h.sj @ wtf_ui_js_compiled.js:582ld.i @ wtf_ui_js_compiled.js:40P.i @ wtf_ui_js_compiled.js:40vl.j @ wtf_ui_js_compiled.js:302N.Gb @ wtf_ui_js_compiled.js:39O @ wtf_ui_js_compiled.js:39vl.e @ wtf_ui_js_compiled.js:302Cr.b @ wtf_ui_js_compiled.js:590h.start @ wtf_ui_js_compiled.js:582(anonymous function) @ wtf_ui_js_compiled.js:602Mj @ wtf_ui_js_compiled.js:237Qj @ wtf_ui_js_compiled.js:236Pj @ wtf_ui_js_compiled.js:236Ur.start @ wtf_ui_js_compiled.js:601(anonymous function) @ wtf_ui_js_compiled.js:598Mj @ wtf_ui_js_compiled.js:237Lj @ wtf_ui_js_compiled.js:235Jj.V @ wtf_ui_js_compiled.js:236(anonymous function) @ wtf_ui_js_compiled.js:599ld.i @ wtf_ui_js_compiled.js:40P.i @ wtf_ui_js_compiled.js:40(anonymous function) @ wtf_ui_js_compiled.js:148(anonymous function) @ wtf_ui_js_compiled.js:129setTimeout (async)(anonymous function) @ wtf_ui_js_compiled.js:129Ii.Ja @ wtf_ui_js_compiled.js:148T @ wtf_ui_js_compiled.js:139Ii @ wtf_ui_js_compiled.js:147Gr @ wtf_ui_js_compiled.js:593Rr @ wtf_ui_js_compiled.js:598Or @ wtf_ui_js_compiled.js:597(anonymous function) @ wtf_ui_js_compiled.js:595Le @ wtf_ui_js_compiled.js:63Ge @ wtf_ui_js_compiled.js:65(anonymous function) @ wtf_ui_js_compiled.js:61