Error after update 2.0 > 2.04

I just updated from 2.0 to 2.04. Since update I get several errormessages in backend AND frontend. Any ideas??

SCREENSHOT: https://ibb.co/nBRnmc

Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 297
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 300
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 303
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 306
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 309
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 312
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 318
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 321
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 324
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 330
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 333
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 336
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 339
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 342
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 345
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 348
Warning: Creating default object from empty value in /home/xxx/xxx/xxx/public_html/xxx/wp-content/plugins/ultimate-member/includes/class-init.php on line 351

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