Well, happened again.
This is my complete event log from Cuba Studio 2020.2
26/01/2022
16:10	New CUBA Platform releases are available
			Details
16:11	CUBA Add-on Updates
			The following CUBA add-on is ready to update: Runtime diagnose
			Ignore for this project
16:20	Test containers sync complete
			Updated test containers:
			KomerziaerpTestContainer
16:23	CUBA Add-on Updates
			The following CUBA add-ons are ready to update: Reporting, Charts, Business Process Management, Full Text Search
			Ignore for this project
16:24	Project undeployed
16:24	Project undeployed
16:25	Web-toolkit module has been created
16:27	CUBA Add-on Updates
			The following CUBA add-ons are ready to update: Reporting, Charts, Business Process Management, Full Text Search
			Ignore for this project
16:33	Test containers sync complete
			Updated test containers:
			KomerziaerpTestContainer
16:33	CUBA Platform version 7.0.0 set in the project is ignored
			Details
16:34	Project undeployed
16:34	Project undeployed
Happened when I updated Runtime diagnosis, it said I had premium repos in my gradle and removed it. Now my project has the issue mentioned earlier again.
This is my build.gradle file.
buildscript {
    ext.cubaVersion = '7.0.12'
    repositories {
        maven {
            url 'https://repo.cuba-platform.com/content/groups/work'
            credentials {
                username(rootProject.hasProperty('repoUser') ? rootProject['repoUser'] : 'cuba')
                password(rootProject.hasProperty('repoPass') ? rootProject['repoPass'] : 'cuba123')
            }
        }
    }
    dependencies {
        classpath "com.haulmont.gradle:cuba-plugin:$cubaVersion"
    }
}
def modulePrefix = 'komerzia'
def globalModule = project(":${modulePrefix}-global")
def coreModule = project(":${modulePrefix}-core")
def guiModule = project(":${modulePrefix}-gui")
def webModule = project(":${modulePrefix}-web")
def webToolkitModule = project(":${modulePrefix}-web-toolkit")
def servletApi = 'javax.servlet:javax.servlet-api:3.1.0'
apply(plugin: 'cuba')
cuba {
    artifact {
        group = 'com.komenco.komerziaerp'
        version = '0.1'
        isSnapshot = true
    }
    tomcat {
        dir = "$project.rootDir/deploy/tomcat"
    }
    ide {
        vcs = 'Git'
    }
}
dependencies {
    appComponent("com.haulmont.cuba:cuba-global:$cubaVersion")
    appComponent('de.diedavids.cuba.runtimediagnose:runtime-diagnose-global:1.3.0')
    appComponent("com.haulmont.reports:reports-global:$cubaVersion")
    appComponent("com.haulmont.fts:fts-global:$cubaVersion")
    appComponent("com.haulmont.charts:charts-global:$cubaVersion")
    appComponent("com.haulmont.bpm:bpm-global:$cubaVersion")
}
def postgres = 'org.postgresql:postgresql:42.2.9'
configure([globalModule, coreModule, guiModule, webModule, webToolkitModule]) {
    apply(plugin: 'java')
    apply(plugin: 'maven')
    apply(plugin: 'cuba')
    dependencies {
        testCompile('junit:junit:4.12')
    }
    task sourceJar(type: Jar) {
        from file('src')
        classifier = 'sources'
    }
    artifacts {
        archives sourceJar
    }
}
configure(globalModule) {
    dependencies {
        compile('org.apache.poi:poi-ooxml:3.17') {}
        if (!JavaVersion.current().isJava8()) {
            runtime('javax.xml.bind:jaxb-api:2.3.1')
            runtime('org.glassfish.jaxb:jaxb-runtime:2.3.1')
        }
    }
    entitiesEnhancing {
        main { enabled = true }
    }
    jar {
        manifest {
            attributes('App-Component-Id': cuba.artifact.group)
            attributes('App-Component-Version': cuba.artifact.version + (cuba.artifact.isSnapshot ? '-SNAPSHOT' : ''))
        }
    }
}
configure(coreModule) {
    configurations {
        jdbc
        dbscripts
    }
    dependencies {
        compile(globalModule)
        compileOnly(servletApi)
        jdbc(postgres)
        testRuntime(postgres)
    }
    task cleanConf(description: 'Cleans up conf directory') {
        doLast {
            def dir = new File(cuba.tomcat.dir, "/conf/${modulePrefix}-core")
            if (dir.isDirectory()) {
                ant.delete(includeemptydirs: true) {
                    fileset(dir: dir, includes: '**/*', excludes: 'local.app.properties')
                }
            }
        }
    }
    task deploy(dependsOn: [assemble, cleanConf], type: CubaDeployment) {
        appName = "${modulePrefix}-core"
        appJars(modulePrefix + '-global', modulePrefix + '-core')
    }
    task createDb(dependsOn: assembleDbScripts, description: 'Creates local database', type: CubaDbCreation) {
        dbms = 'postgres'
        host = 'localhost'
        dbName = 'newkomerziamigra'
        dbUser = 'postgres'
        dbPassword = 'postgres'
    }
    task updateDb(dependsOn: assembleDbScripts, description: 'Updates local database', type: CubaDbUpdate) {
        dbms = 'postgres'
        host = 'localhost'
        dbName = 'newkomerziamigra'
        dbUser = 'postgres'
        dbPassword = 'postgres'
    }
}
configure(guiModule) {
    dependencies {
        compile(globalModule)
    }
    task deployConf(type: Copy) {
        from file('src')
        include "com/komenco/komerziaerp/**"
        into "$cuba.tomcat.dir/conf/${modulePrefix}"
    }
}
configure(webModule) {
    configurations {
        webcontent
    }
    dependencies {
        compileOnly(servletApi)
        compile(guiModule)
    }
    jar {
        with copySpec {
            from sourceSets.main.allJava
            include "com/komenco/komerziaerp/web/toolkit/ui/client/**"
        }
    }
    task webArchive(type: Zip) {
        from file("$buildDir/web")
        from file('web')
        classifier = 'web'
    }
    artifacts {
        archives webArchive
    }
    task deployConf(type: Copy) {
        from file('src')
        include "com/komenco/komerziaerp/**"
        into "$cuba.tomcat.dir/conf/${modulePrefix}"
    }
    task clearMessagesCache(type: CubaClearMessagesCache) {
        appName = "${modulePrefix}"
    }
    deployConf.dependsOn clearMessagesCache
    task cleanConf(description: 'Cleans up conf directory') {
        doLast {
            def dir = new File(cuba.tomcat.dir, "/conf/${modulePrefix}")
            if (dir.isDirectory()) {
                ant.delete(includeemptydirs: true) {
                    fileset(dir: dir, includes: '**/*', excludes: 'local.app.properties')
                }
            }
        }
    }
    task deploy(dependsOn: [assemble, cleanConf], type: CubaDeployment) {
        appName = "${modulePrefix}"
        appJars(modulePrefix + '-global', modulePrefix + '-gui', modulePrefix + '-web')
    }
    task buildScssThemes(type: CubaWebScssThemeCreation)
    task deployThemes(type: CubaDeployThemeTask, dependsOn: buildScssThemes)
    assemble.dependsOn buildScssThemes
    task themesJar(type: Jar) {
        from file('themes')
        classifier = 'themes'
    }
    artifacts {
        archives themesJar
    }
}
configure(webToolkitModule) {
    dependencies {
        compile(webModule)
    }
    jar {
        from sourceSets.main.allJava
    }
    task buildWidgetSet(type: CubaWidgetSetBuilding) {
        widgetSetClass = 'com.komenco.komerziaerp.web.toolkit.ui.AppWidgetSet'
    }
    task debugWidgetSet(type: CubaWidgetSetDebug) {
        widgetSetClass = 'com.komenco.komerziaerp.web.toolkit.ui.AppWidgetSet'
    }
    task webArchive(dependsOn: buildWidgetSet, type: Jar) {
        from file("$buildDir/web")
        classifier = 'client'
    }
    artifacts {
        archives webArchive
    }
    task deploy(dependsOn: webArchive, type: Copy) {
        from webArchive
        into "$cuba.tomcat.dir/webapps/${modulePrefix}/WEB-INF/lib"
    }
}
task undeploy(type: Delete, dependsOn: ":${modulePrefix}-web:cleanConf") {
    delete("$cuba.tomcat.dir/shared")
    delete("$cuba.tomcat.dir/webapps/${modulePrefix}-core")
    delete("$cuba.tomcat.dir/webapps/${modulePrefix}")
}
task restart(dependsOn: ['stop', ":${modulePrefix}-core:deploy", ":${modulePrefix}-web:deploy", ":${modulePrefix}-web-toolkit:deploy"], description: 'Redeploys applications and restarts local Tomcat') {
    doLast {
        ant.waitfor(maxwait: 6, maxwaitunit: 'second', checkevery: 2, checkeveryunit: 'second') {
            not {
                socket(server: 'localhost', port: '8787')
            }
        }
        start.execute()
    }
}
apply from: 'extra.gradle'
task buildWar(type: CubaWarBuilding) {
    coreContextXmlPath = 'modules/core/web/META-INF/war-context.xml'
    webXmlPath = 'modules/web/web/WEB-INF/single-war-web.xml'
    appHome = './komerzia'
    includeContextXml = true
    includeJdbcDriver = true
    appProperties = ['cuba.automaticDatabaseUpdate'                            : true,
                     'cuba.web.productionMode'                                 : true,
                     'cuba.gui.genericFilterMaxResultsOptions'                 : 'NULL, 20, 50, 100, 500, 1000, 5000, 50000, 5000000',                         
                     'license.concurrentSessionsLimit'                         : 100,
                     'reporting.openoffice.docx.useOfficeForDocumentConversion': true,
                     'reporting.openoffice.docFormatterTimeout'                : 900,
                     'reporting.backgroundReportProcessingTimeoutMs'           : 900000,
                     'cuba.schedulingActive'                                   : true]
}