Latest version erroring out events page

When activated, we get an error message. When Category Colors is deactivated, the page works fine. PHP log error below (pulled from a duplicate dev/staging site – https://wt011003535.mywtdev.com/events/):

"PHP Recoverable Error: Uncaught exception 'Error' with message 'Object of class WP_Error could not be converted to string' in /app/web/wp-includes/formatting.php on line 1096, request: GET /events/month/, request_id: 1fbbbf8d7c1cbca9b46abc8da1e77406

0# wp_check_invalid_utf8(WP_Error) at [/app/web/wp-includes/formatting.php:4695]
1# esc_attr(WP_Error) at [/app/web/wp-content/plugins/the-events-calendar-category-colors/src/views/legend.php:51]
2# include(/app/web/wp-content/plugins/the-events-calendar-category-colors/src/views/legend.php) at [/app/web/wp-content/plugins/the-events-calendar-category-colors/src/Category_Colors/Main.php:425]
3# Fragen\Category_Colors\Main->view(legend, array[3], ) at [/app/web/wp-content/plugins/the-events-calendar-category-colors/src/Category_Colors/Frontend.php:282]
4# Fragen\Category_Colors\Frontend->show_legend(/app/web/wp-content/plugins/the-events-calendar/src/views/v2/month/top-bar.php) at [/app/web/wp-includes/class-wp-hook.php:326]
5# WP_Hook->apply_filters(, array[3]) at [/app/web/wp-includes/class-wp-hook.php:348]
6# WP_Hook->do_action(array[3]) at [/app/web/wp-includes/plugin.php:517]
7# do_action(tribe_template_before_include:events/v2/month/top-bar, /app/web/wp-content/plugins/the-events-calendar/src/views/v2/month/top-bar.php, array[2], Tribe\Events\Views\V2\Template) at [/app/web/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php:1439]
8# Tribe__Template->actions_before_template(/app/web/wp-content/plugins/the-events-calendar/src/views/v2/month/top-bar.php, array[2], events/v2/month/top-bar) at [/app/web/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php:909]
9# Tribe__Template->template(array[2]) at [/app/web/wp-content/plugins/the-events-calendar/src/views/v2/components/header.php:41]
10# include(/app/web/wp-content/plugins/the-events-calendar/src/views/v2/components/header.php) at [/app/web/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php:1062]
11# Tribe__Template->template_safe_include(NULL) at [/app/web/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php:912]
12# Tribe__Template->template(array[2]) at [/app/web/wp-content/plugins/the-events-calendar/src/views/v2/month.php:52]
13# include(/app/web/wp-content/plugins/the-events-calendar/src/views/v2/month.php) at [/app/web/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php:1062]
14# Tribe__Template->template_safe_include(NULL) at [/app/web/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php:912]
15# Tribe__Template->template(array[1], array[2], ) at [/app/web/wp-content/plugins/the-events-calendar/src/Tribe/Views/V2/Template.php:71]
16# Tribe\Events\Views\V2\Template->render() at [/app/web/wp-content/plugins/the-events-calendar/src/Tribe/Views/V2/View.php:731]
17# Tribe\Events\Views\V2\View->get_html() at [/app/web/wp-content/plugins/the-events-calendar/src/Tribe/Views/V2/Template_Bootstrap.php:275]
18# Tribe\Events\Views\V2\Template_Bootstrap->get_view_html() at [/app/web/wp-content/plugins/the-events-calendar/src/views/v2/default-template.php:19]
19# include(/app/web/wp-content/plugins/the-events-calendar/src/views/v2/default-template.php) at [/app/web/wp-includes/template-loader.php:106]
20# require_once(/app/web/wp-includes/template-loader.php) at [/app/web/wp-blog-header.php:19]
21# require(/app/web/wp-blog-header.php) at [/app/web/index.php:17]
The reference of this error is 1fbbbf8d7c1cbca9b46abc8da1e77406."

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