Both 3rd-party and Atlassian made gadgets fail to load in wallboard

VM218:25 Uncaught SyntaxError: Unexpected token &
    at eval (<anonymous>)
    at batch.js?adg3Enabled=true&locale=en-US:69
    at Function.globalEval (batch.js?adg3Enabled=true&locale=en-US:69)
    at HTMLScriptElement.<anonymous> (batch.js?adg3Enabled=true&locale=en-US:181)
    at Function.each (batch.js?adg3Enabled=true&locale=en-US:70)
    at init.domManip (batch.js?adg3Enabled=true&locale=en-US:180)
    at init.append (batch.js?adg3Enabled=true&locale=en-US:175)
    at gadgetHtml (batch.js?adg3Enabled=true&locale=en-US&sd_operational=true:6928)
    at batch.js?adg3Enabled=true&locale=en-US&sd_operational=true:6934
    at Array.forEach (<anonymous>)
(anonymous) @ batch.js?adg3Enabled=true&locale=en-US:69
globalEval @ batch.js?adg3Enabled=true&locale=en-US:69
(anonymous) @ batch.js?adg3Enabled=true&locale=en-US:181
each @ batch.js?adg3Enabled=true&locale=en-US:70
domManip @ batch.js?adg3Enabled=true&locale=en-US:180
append @ batch.js?adg3Enabled=true&locale=en-US:175
gadgetHtml @ batch.js?adg3Enabled=true&locale=en-US&sd_operational=true:6928
(anonymous) @ batch.js?adg3Enabled=true&locale=en-US&sd_operational=true:6934
b.each.b.forEach @ batch.js?adg3Enabled=true&locale=en-US:986
(anonymous) @ batch.js?adg3Enabled=true&locale=en-US&sd_operational=true:6897
b.each.b.forEach @ batch.js?adg3Enabled=true&locale=en-US:986
AJS.WALLBOARD.populateWallframe @ batch.js?adg3Enabled=true&locale=en-US&sd_operational=true:6878
(anonymous) @ ?dashboardId=10101:114
j @ batch.js?adg3Enabled=true&locale=en-US:76
fireWith @ batch.js?adg3Enabled=true&locale=en-US:77
ready @ batch.js?adg3Enabled=true&locale=en-US:65
Q @ batch.js?adg3Enabled=true&locale=en-US:75
batch.js?adg3Enabled=true&locale=en-US:35 Uncaught Error: undefined missing jira/container-api
    at l (batch.js?adg3Enabled=true&locale=en-US:35)
    at batch.js?adg3Enabled=true&locale=en-US:35