<h2>Post instance upgrade, homepage keeps on loading and unable to access the Polaris Menu</h2><br/><div style="overflow-x:auto"><article><div ><h3 >Issue </h3><section><ul style="list-style-position: inside;"><li style="font-size: 10pt;"><span style="font-size: 10pt;">Home page keeps on loading and unable to access the next experience menu after instance upgrade</span></li></ul></section></div><div ><h3 >Cause</h3><section><ul style="list-style-position: inside;"><li style="font-size: 10pt;"><span style="font-size: 10pt;">Missing styles in Polaris theme</span></li></ul></section></div><div ><h3 >Resolution</h3><section><ul style="list-style-position: inside;"><li style="font-size: 10pt;"><span style="font-size: 10pt;">Go to Polaris theme and confirm there are no styles under 'Compositional App Theme' tab</span></li></ul> <p style="padding-left: 80px;"><span style="font-size: 10pt;"><a href="https://<instance_name>.service-now.com/nav_to.do?uri=sys_ux_theme.do?sys_id=31bf91ae07203010e03948f78ad30095">https://<instance_name>.service-now.com/nav_to.do?uri=sys_ux_theme.do?sys_id=31bf91ae07203010e03948f78ad30095</a></span></p> <ul style="list-style-position: inside;"><li style="font-size: 10pt;"><span style="font-size: 10pt;">Repair the sn-themes application which will bring the styles back to the Polaris theme.</span></li></ul></section></div></article></div>