Production build tries to load app-extjs?_dc=20220503223151. The file that doesn't exist - extjs

Question

Using ExtJS 7.3.1.27
Any idea why ExtJS tries to load that non-existing path?
The URL is:
app-extjs?_dc=20220503223151
where "app" is the name of the application.
app.json:
{
"name": "App",
"namespace": "App",
"version": "1.1.0.0",
"framework": "ext",
"template": "universalclassicmodern",
"env": "${build.environment}",
"indexHtmlPath": "index.html",
"locale": "es",
"requires": [
"font-awesome",
"ext-ux",
"ext-locale"
],
"builds": {
"desktop": {
"toolkit": "classic",
"theme": "Andromeda",
"sass": {
"generated": {
"var": "${build.id}/sass/save.scss",
"src": "${build.id}/sass/save"
}
}
},
"phone": {
"toolkit": "modern",
"theme": "theme-material",
"sass": {
"generated": {
"var": "${build.id}/sass/save.scss",
"src": "${build.id}/sass/save"
}
}
}
},
"classpath": [
"app/shared/src",
"app/${build.id}/src"
],
"overrides": [
"app/shared/overrides",
"app/${build.id}/overrides"
],
"sass": {
"namespace": "App",
"etc": [
"sass/etc/all.scss"
],
"var": [
"app/shared/sass/var.scss",
"app/${build.id}/sass/var.scss"
],
"src": [
"app/shared/src/sass/src.scss",
"app/${build.id}/sass/src.scss"
]
},
"resources": [
{
"path": "resources",
"output": "shared"
},
{
"path": "resources/${build.id}"
}
],
"output": {
"base": "${workspace.build.dir}/${build.environment}/${app.name}",
"page": "index.html",
"manifest": "generatedFiles/${build.id}.json",
"js": "generatedFiles/${build.id}/app.js",
"appCache": {
"enable": false
},
"resources": {
"path": "${build.id}/resources",
"shared": "resources"
}
},
"fashion": {
"missingParameters": "error",
"inliner": {
"enable": false
}
},
"js": [
],
"css": [
{
"path": "${build.out.css.path}",
"bundle": true,
"exclude": [
"fashion"
]
}
],
"loader": {
"cache": false,
"cacheParam": "_dc"
},
"production": {
"js": [
{
"path": "app.js",
"bundle": true
},
{
"path": "${app.webpack.bundle}",
"compress": false
},
{
"path": "jsencrypt.min.js",
"bundle": false
}
],
"output": {
"appCache": {
"enable": false,
"path": "cache.appcache"
}
},
"loader": {
"cache": "${build.timestamp}"
},
"cache": {
"enable": true
},
"compressor": {
"type": "yui"
}
},
"testing": {
"js": [
{
"path": "app.js",
"bundle": true
},
{
"path": "${app.webpack.bundle}",
"compress": false
},
{
"path": "jsencrypt.min.js",
"bundle": false
}
],
"output": {
"appCache": {
"enable": false,
"path": "cache.appcache"
}
},
"loader": {
"cache": "${build.timestamp}"
},
"cache": {
"enable": true
},
"compressor": {
"type": "yui"
}
},
"development": {
"js": [
{
"path": "app.js",
"bundle": true
},
{
"path": "main.js"
},
{
"path": "node_modules/faker/dist/faker.min.js",
"bundle": true
},
{
"path": "node_modules/jsencrypt/bin/jsencrypt.min.js",
"bundle": true
}
],
"watch": {
"delay": 250
}
},
"bootstrap": {
"base": "${app.dir}",
"manifest": "generatedFiles/${build.id}.json",
"microloader": "generatedFiles/bootstrap.js",
"css": "generatedFiles/bootstrap.css"
},
"cache": {
"enable": false,
"deltas": "${build.id}/deltas"
},
"appCache": {
"cache": [
"index.html"
],
"network": [
"*"
],
"fallback": []
},
"archivePath": "archive/${build.id}",
"ignore": [
"(^|/)CVS(/?$|/.*?$)"
],
"id": "60bcc415-f5ee-4ebd-a3f5-6aba304f704b",
"slicer": null
}
Thanks.