Unexpected Application Error!

t.entries is not a function or its return value is not iterable

TypeError: t.entries is not a function or its return value is not iterable
    at https://dmtgy0px4zdqn.cloudfront.net/c2fa973874b19b1420c8e033ddcf00c8daf41e17.js?meteor_js_resource=true&_g_app_v_=329:90:19563
    at lB (https://dmtgy0px4zdqn.cloudfront.net/c2fa973874b19b1420c8e033ddcf00c8daf41e17.js?meteor_js_resource=true&_g_app_v_=329:41:84075)
    at iH (https://dmtgy0px4zdqn.cloudfront.net/c2fa973874b19b1420c8e033ddcf00c8daf41e17.js?meteor_js_resource=true&_g_app_v_=329:41:113120)
    at i (https://dmtgy0px4zdqn.cloudfront.net/c2fa973874b19b1420c8e033ddcf00c8daf41e17.js?meteor_js_resource=true&_g_app_v_=329:41:107673)
    at x (https://dmtgy0px4zdqn.cloudfront.net/c2fa973874b19b1420c8e033ddcf00c8daf41e17.js?meteor_js_resource=true&_g_app_v_=329:49:1377)
    at MessagePort.A (https://dmtgy0px4zdqn.cloudfront.net/c2fa973874b19b1420c8e033ddcf00c8daf41e17.js?meteor_js_resource=true&_g_app_v_=329:49:1907)